How do I calculate a percentage of a number?

Multiply the number by the percentage, then divide by 100. For example, 15% of 200 is (200 × 15) / 100 = 30.

What's the difference between percentage change and percentage points?

Percentage change is relative (e.g. 25% increase), while percentage points measure the raw difference between two percentages (e.g. going from 20% to 25% is a 5 percentage point increase).

Percentage Calculator

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Calculate percentages, percentage increase, and percentage difference

Percentage (%)

Of number

Your Result

20% of 150

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Formula Used

Percentage = (Part / Whole) × 100
Percentage increase = ((New − Old) / Old) × 100

Step-by-Step Explanation

1Choose the type of percentage calculation you need.
2Enter the two known numbers into the fields.
3The result updates instantly as you type — no need to press a button.

Worked Examples

Example 1

What is 20% of 150?

Part = 20% of Whole = 150

20% of 150 = 30

Example 2

Percentage increase from 80 to 100

Old = 80, New = 100

Increase = ((100 − 80) / 80) × 100 = 25%

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