Percentage Calculator

Work out what X% of Y is, what percentage X is of Y, and the percentage change from one value to another.

What is X% of Y?

% of=50

X is what % of Y?

is what % of=10%

Percentage change from X to Y

to=+20%

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How to use percentage calculator

1Pick the calculation you needChoose from X% of Y, X is what % of Y, or percentage change.

2Enter your numbersType the values into the fields.

3Read the resultThe answer updates instantly as you type.

Percentage change = (new value − old value) ÷ old value × 100. A positive result means an increase, negative means a decrease.

Yes, all three calculators accept decimals and negative numbers.