Percentage Change Calculator — Free Online Tool

Find the percentage increase or decrease between two numbers. Great for price changes, growth rates and score improvements.

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How to use Percentage Change Calculator

Enter the old and new values.
Click Calculate.
See the percent change.

Frequently asked questions

What if the old value is zero?

Percent change from zero is undefined, so enter a non-zero starting value.

Your privacy is protected

This tool runs entirely inside your browser. No file, text or number you enter is ever sent to our servers, stored, or shared. Close the tab and everything is gone.

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