Percentage Calculator
Calculate percentages, percentage change, increases, decreases, percentage difference, and reverse percentages.
Last updated: August 2026
Percentage Calculator
20% of 150 is 30.
150 × 20 / 100 = 30
To find a percentage of a number, multiply the number by the percentage as a decimal.
Examples
Percentage change uses the original value; percentage difference uses both values symmetrically. A percentage increase followed by the same decrease does not return to the original value.