What is a percentage of a number?

Use this when you need a portion of a number, such as 20% of 80.

Decimal places

Result 20

20% of 100 is 20.

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Use this for discounts, tips, fees, marks, targets and any question where one number is part of another.

A percentage is a number out of 100. For example, 20% means 20 out of every 100.