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Percentage Calculator

Updated April 6, 2026 · Free Online Tool

Percentage Calculator

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Formula: (value * percent) / 100
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Calculate any percentage instantly. Find what percentage of a number is, or calculate percentage increase and decrease.

The Percentage Formula

To find X% of Y: multiply Y by X, then divide by 100. For example, 15% of 200 = (200 × 15) / 100 = 30.

Frequently Asked Questions

How do I calculate percentage increase?

Percentage increase = ((New Value – Old Value) / Old Value) × 100. For example, going from 50 to 65 is a 30% increase: ((65-50)/50) × 100 = 30%.

What is the difference between percentage and percentile?

A percentage is a fraction of 100. A percentile indicates the value below which a given percentage of data falls. They measure different things.

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