Percent Change Calculator for Students

The following free Percent Change Calculator can be used to calculate the change between two numbers (a starting value and a final value) as a percentage.

To use the calculator and perform a percent change calculation, simply enter the starting value and the final value and press ENTER or DONE to calculate percent change.

The percent change calculator performs the following 3 steps:

  • Find the absolute value of the difference between the starting value and the final value

  • Divide that difference by the starting value

  • Multiply the result by 100

*Note that for any percent change problem, the answer will be expressed as a positive percentage. When the staring value is greater than the final value, it will be a percent decrease. When the starting value is smaller than the final value, it will be a percent increase.

What is the percent change formula?

You can always use the percentage change formula to solve any problem where you have to calculate the percent of change between two numbers (a starting value and a final value).

 
 

Calculating Percent Change Sample Problem

Example: Chris drove 120 miles in September and 150 miles in October. What is the percent change in miles driven between the two months?

In this example, you can identify the starting value and final value as follows:

Starting Value: 120

Final Value: 150

Next, insert these values into the change formula as follows:

 
 

Result: 25% change (or 25% increase)

Looking for more Percent Change Examples?

Click the link below to access our free step-by-step guide to calculating percent change using 3-easy steps and learn how to solve any percent change problem without using a calculator.

▶ Click here to access your free student guide to Calculating Percent Change in 3 Easy Steps

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