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Percentage Change Calculator
Percentage Change Formula: (Ending Value - Original Value) / Original Value x 100

Percentage Change Definition
Forget clumsy formulas and standard calculators, our percentage change calculator does all the work for you. Just input the required information and you can determine the amount of change, as a percent that happened.

Uses for Percentage Change
People use percentage change for a variety of reasons. Some of these may be:
  • Percentage of weight lost on a diet
  • Comparing crowd numbers for an event from day to day
  • Percentage gained or lost in an investment
  • Comparing sports statistics

The amount of change between two numbers is the difference, but just a difference does not mean much to many people. It has more of an impact when you say, “There was a 50 percent increase in attendance at the concert compared to last year,” versus when you say, “There were 100 more people at the concert this year than last.”

How Percentage Change is Calculated
Our percentage change calculator uses the following formula to make the calculation:

((Ending Value – Original Value)/Original Value) x 100

Information Our Calculator Uses
You do not need to remember this formula. You only need to input the following data into the calculator:
  • Original value
  • Ending value

The original value is the first number or the earliest number. For instance, if you are comparing concert attendance between this year and last year, the original value is last year’s attendance number.
The ending value is the most recent data. For the concert example, it would be the number of people who came to the concert this year. Just put these two numbers into the calculator to find the amount of change, as a percent.

Money and Percentage Change
Money is another area where percentage change is frequently used. You can determine price changes as a percent or how much of a percentage change your salary raise gave you in your income.
For example, say you make $50,000 a year, and your boss gives you a $2,000 a year raise. The percentage increase can be found on our calculator by putting $50,000 into the original value box and $52,000 into the ending value box. $52,000 comes from adding your raise to your original salary. The calculator determines that you got a 4 percent raise.

Another Practical Use for Percentage Change
Another way to use this calculator is to estimate the change in your home’s value from one year to the next. If your property is valued one year at $150,000 and the next at $155,000, your home increased in value by 3.33 percent.
The uses for the percent change you find with our calculator are many. Find out how many ways you can use the information and try out our online calculator today.

How to Calculate Percentage Change
Let's be honest - sometimes the best percentage change calculator is the one that is easy to use and doesn't require us to even know what the percentage change formula is in the first place! But if you want to know the exact formula for calculating percentage change then please check out the "Formula" box above.