Percentage Calculator

Calculate percentages, percentage changes, increases and decreases instantly.

What is X% of Y?

% of=—

X is what percent of Y?

is what % of=—

Percentage Change

From an old value to a new value.

to=—

Add or Subtract a Percentage

% =—

How to Calculate a Percentage

To find a percentage of a number, convert the percentage to a decimal and multiply it by the number. For example, 20% of 150 is 0.20 × 150 = 30.

Percentage Increase and Decrease

Percentage change compares the difference between a new value and an original value. A positive result is an increase; a negative result is a decrease.

Common Uses

Percentage calculations are useful for discounts, tips, taxes, markups, investment returns, grades, statistics and everyday comparisons.