Percentage Calculator

Calculate percentages quickly: find X% of a number, determine what percentage one number is of another, or calculate percentage change.

Calculation Type

Percentage (%)

The percentage to calculate

Of this number

The base number

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Result

0

Visualization

20.0%

0%25%50%75%100%

Calculation

To find X% of Y

(X ÷ 100) × Y

X is what % of Y

(X ÷ Y) × 100

% Change

((New-Old) ÷ Old) × 100

Documentation

Understanding Percentages

A percentage expresses a number as a fraction of 100. The word comes from Latin per centum, meaning "by the hundred." Percentages are used everywhere: discounts, interest rates, statistics, and more.

Key Conversions

25%

= 0.25 = ¼

50%

= 0.50 = ½

75%

= 0.75 = ¾

Tip: To convert a percentage to a decimal, divide by 100. To convert a decimal to a percentage, multiply by 100.

Frequently Asked Questions