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Percentage Calculator

Quickly calculate a percentage of any number or find the percentage increase or decrease between two values.

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What is a percentage of a number?

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Percentage Increase or Decrease

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How to Calculate a Percentage

To find a percentage of a number, divide the percentage by 100 and multiply the result by the number.

Formula:

Percentage ÷ 100 × Number

Example: What is 15% of 80?

15 ÷ 100 × 80 = 12

Therefore, 15% of 80 is 12.

How to Calculate Percentage Change

Percentage change shows how much a number increased or decreased compared with its original value.

Formula:

(New Value − Original Value) ÷ Original Value × 100

Example

If a price increases from $50 to $65:

(65 − 50) ÷ 50 × 100 = 30%

The price increased by 30%.

Common Percentage Questions

How do I find 10% of a number?

Divide the number by 10. For example, 10% of 250 is 25.

How do I find 20% of a number?

Multiply the number by 0.20. For example, 20% of 100 is 20.

How do I calculate a discount?

Multiply the original price by the discount percentage to find the amount saved, then subtract the savings from the original price.

Can percentages be greater than 100%?

Yes. A percentage greater than 100% represents an amount larger than the original whole.