CALCULATE · VISUALIZE · EXPLORE

Percentage Change Calculator

Compare two values and visualize the increase or decrease.

● Live results · Runs on your device · No sign-up

Your inputs

Change = (new − original) / |original| × 100.

Live results

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UNDERSTAND YOUR RESULTS

Percentage Change Calculator guide

Compare two values and visualize the increase or decrease.

How to use this tool

Enter Original value, New value.
Change a value to update the results and illustration. Check any validation message before using the output.
Copy the results or download CSV. Reset restores the example values.

A worked example

An increase from 100 to 125 is 25%. Reversing the comparison gives a decrease of 20%, not 25%.

How it works

Change = (new − original) / |original| × 100.

Frequently asked questions

How should I interpret the illustration?

It is a visual aid, not a replacement for the numeric output. Some charts compare values with different units, and those magnitudes are not directly comparable.

Can I use the result without checking the inputs?

Check units, signs, assumptions and rounding first. The tool cannot know whether the values you enter describe the real situation correctly.