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Percentage Change Calculator

% increase or decrease between two numbers

โœ“ Freeโœ“ No signupโœ“ Runs in your browser
Percentage Change Calculator
๐Ÿ”บ
Percentage Change Calculator
% increase or decrease between two numbers
โ–ผ
Difference
Multiplier

How this works

Percentage change compares the difference between the new and old values to the old value. A positive result is an increase and a negative one a decrease. Going up 50 percent and then down 50 percent does not bring you back to the start, because the second change is measured from the bigger number.

Frequently Asked Questions

What is the formula?

((New โˆ’ Old) รท Old) ร— 100.

What if the old value is zero?

Percentage change is undefined when starting from zero, because you cannot divide by zero.

Is this the same as percentage difference?

No. Percentage difference compares two values against their average and has no direction; percentage change measures from a starting point.

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