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Percentage Calculator

Calculate percentages, percentage increases, decreases, and changes.

Calculator

Result

20% of 150

30

Formula

Percentage of a number

Result = Value × Percentage ÷ 100

Percentage change

(New − Original) ÷ Original × 100

Examples

What is 20% of 150?

150 × 20 ÷ 100 = 30

30 is what percent of 150?

30 ÷ 150 × 100 = 20%

Percentage change from 100 to 120

(120 − 100) ÷ 100 × 100 = 20%

Add 20% to 100

100 × (1 + 20 ÷ 100) = 120

Remove 20% from 100

100 × (1 − 20 ÷ 100) = 80
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Frequently Asked Questions

How do I calculate a percentage of a number?

Multiply the value by the percentage, then divide the result by 100.

How do I find what percentage one number is of another?

Divide the first number by the second number, then multiply by 100.

How do I calculate percentage increase or decrease?

Subtract the original value from the new value, divide by the original value, and multiply by 100. Reverse the subtraction for a percentage decrease.

Can a percentage change be negative?

Yes. A negative percentage change indicates that the value moved in the opposite direction from the selected increase or decrease mode.