Percentage Calculator
Find a percentage of a number, what percent one number is of another, and percentage change.
What is a percentage calculator?
A percentage calculator finds a percentage of a number, what percent one number is of another, and percentage change. Example: 15% of 240 = 36.
How to use it
Choose a mode, enter X and Y, then tap Calculate. For 15% of 240, enter 15 and 240.
Formula
Percentage of a number = X ÷ 100 × Y. So 15 ÷ 100 × 240 = 36.
Example
15% of 240 = 36. Divide 15 by 100 to get 0.15, then multiply by 240: 0.15 × 240 = 36.
Frequently Asked Questions
What is 15% of 240?
36.
How do I find what percent X is of Y?
Use the second mode: X ÷ Y × 100.
How do I find percentage change?
Use the third mode: (new − old) ÷ old × 100.
More calculators: Math Tools and All Tools.