Calculate percentages six common ways: find a percentage of a value, work out what percentage one number is of another, percentage change, increase or decrease a value, and more.
Work out a percentage of a number, e.g. 15% of 215.
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Find what percentage one number is of another, e.g. 30 is what % of 150.
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Percentage increase or decrease from one value to another.
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Add or subtract a percentage from a value.
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Find the total when you know a part and its percentage, e.g. 45 is 30% of what?
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Symmetric percentage difference between two values (uses their average as the base).
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A percentage expresses a number as a fraction of 100. Our percentage calculator handles the six most common calculations in one place, so you can switch between them without re-entering your values.
A percentage is a number expressed as a part of 100. The symbol % means "per hundred".
Percentage change compares a new value to an original (it is directional). Percentage difference is symmetric — it compares two values using their average as the base.