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How to use Percentage Change Calculator

Enter the original value and the new value and the calculator returns the percentage change and the absolute difference.

Frequently asked questions

What is the percentage change formula?

Percentage change = (new − old) / |old| × 100%, positive for an increase and negative for a decrease.

How is percent increase different from percent decrease?

An increase gives a positive result; a decrease gives a negative one — the sign shows the direction of change.

What does the absolute difference show?

Simply new minus old, the raw amount of change before it is expressed as a percentage.

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