How to Calculate a Percentage Increase Without Tears

Learn how to quickly calculate percentage increases to make sense of changes in numbers and percentages.

Ever wished for a magical formula to quickly impress everyone at work with your percentage prowess? You’ve hit the jackpot! This go-to guide for calculating percentage increases will turn you into a math wizard faster than you can say “compound interest.”

Whether you’re grappling with calculator woes, baffled by formulas, or just need a step-by-step example, we’ve got your back. Curious about calculating increases over time or adding a percentage hike to a number?

Stick around—mind-blowing clarity awaits!

Key takeaways:

  • Subtract the original value from the new value to get the increase.
  • Divide the increase by the original value.
  • Multiply by 100 to get your percentage.

Calculator Use

percentage increase

Ah, the trusty calculator, our numbers wizard in a pocket-sized cloak. Calculating percentages may seem like voodoo math, but with a calculator, it’s like slicing through butter with a hot knife.

  1. First, make sure it’s set to the standard mode — scientific is for rocket scientists, after all.
  2. To find the increase, subtract the old value from the new value. This gives you the raw increase.
  3. Divide this increase by the old value. Boom, you’ve got the decimal version of your percentage change.
  4. Multiply by 100 to transform that decimal into a percentage. Abracadabra, you’re done.

Who knew math could be this easy with a bit of digital magic?

Percentage Increase Formula

Alright, let’s dive into the joys of math! To figure out a percentage increase, you’re essentially trying to see how much a number has grown in relation to its original value. Sounds fancy, right? But it’s pretty straightforward.

First, find the difference between the new number and the original number. This gives you the increase.

Then, take that increase and divide it by the original number. This helps you see what portion of the original number this increase represents.

Finally, multiply that decimal by 100 to convert it into a percentage.

Easy-peasy! You went from math anxiety to math wizard in three simple steps.

In short:

  • Subtract the original value from the new value to get the increase.
  • Divide the increase by the original value.
  • Multiply by 100 to get your percentage.

Voila! You’ve got your percentage increase. Now go impress your friends with your newfound skills.

Example Problem: Percentage Increase

Alright, buckle up! Let’s get into the nitty-gritty with a concrete example:

Imagine you found a vintage record online for $20 last year. This year, the price has surged to $25. Curious about the percentage increase? Here’s your trusty step-by-step guide:

  1. First, find the difference in price: 25 – 20. That gives you 5.
  2. Next, divide that difference (5) by the original price (20). You get 0.25.
  3. To convert that decimal into a percentage, just multiply by 100. So, 0.25 becomes 25 percent.

There you go! The price of your vintage record increased by 25 percent. Ta-da! You did it. You’re officially a percentage wizard.

How Do I Calculate Percentage Increase Over Time?

Alright, let’s break down calculating percentage increase over time like we’re slicing pie — delicious and straightforward:

First, get your numbers right. You need the starting value (let’s call it Value A) and the ending value (Value B). Easy peasy.

Then, subtract! Take Value B, subtract Value A, and you’ve got the difference. Let’s call this Difference D. Think of it as the change that’s happened over time.

Next, divide Difference D by the starting value, Value A. This tells you how much change happened relative to where you started.

Finally, multiply by 100 to turn that snazzy decimal into a percentage. Voilà, you’ve got your percentage increase over time!

For example, if you started with 50 ice creams (Value A) and ended with 75 (Value B), the math goes like this:

  • 75 – 50 = 25 (Difference D)
  • 25 / 50 = 0.5
  • 0.5 100 = 50%

You’ve increased your ice cream stash by 50%. Now that’s a success story worthy of celebration, or at least a brain freeze!

How Do I Add a Percentage Increase to a Number?

First, get the original number firmly in your grasp. Multiply this original number by your percentage increase, but here’s the kicker: convert your percentage into decimal form before you do so. For instance, if you’re working with a 20 percent increase, think 0.20 instead.

Got your result? Great! Now, add that result to the original number. Voila! You’ve incorporated the percentage increase.

Let’s bring this into the real world with ice cream (because who doesn’t love ice cream!). Imagine you normally enjoy 100 scoops per year. If you want to increase by 10 percent, convert 10 percent to 0.10. Multiply 100 by 0.10 to get 10. Add this 10 to your original 100 scoops. You’re now at a delightful 110 scoops.

  1. Identify the original number.
  2. Convert the desired percentage into a decimal.
  3. Multiply the original number by this decimal.
  4. Add the result to the original number.

Now go forth and add percentages like a pro!

How Do I Calculate Percentage Increase in Excel?

Excel makes calculating percentage increases a breeze. Here’s how you can get it done:

First, enter your original number in cell A1 and your new number in cell B1. These numbers are the key players of the show.

Next, in cell C1, type the following formula: (B1 – A1) / A1. This formula calculates the difference between your new number and the original one, then divides that difference by the original number. Magic? Nope, just math.

After you’ve typed in the formula, press Enter. Voilà! Your percentage increase will appear in cell C1, but wait—it’s a decimal! To give it the sass of a proper percentage, just format the cell as a percentage.

Remember, fancy spreadsheets aren’t reserved for accountants; Excel’s got your back for even the simplest tasks like this!


Here are some handy pointers to keep your percentage increase calculations sharp and smooth:

First off, remember the order of operations: subtract the original number from the new number, then divide, and finally multiply by 100. Applies to almost everything except baking—there, all you need is love, and a double-check on your measurements.

Get comfortable with your calculator. Treat it like a dear old friend who tells you the truth: if you input the wrong numbers, expect some eyebrow-raising results.

Keep your focus laser-sharp when dealing with percentages over time. Small errors at each stage can snowball faster than you can say “math is hard.”

If you’re using Excel, master the art of the formula:


It can save more time than a microwave on shortcut setting.

Resist the urge to memorize numbers. Instead, understand the process. Perfection is unnecessary; even the best mathematicians sometimes carry that one.

Technique trumps speed—accuracy is king!

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