About this percentage calculator
Answer common percentage questions, including a percentage of a number, what percent one number is of another, and percentage change.
How to use it
Enter the values requested by the calculator. Results update in your browser as you change the inputs. Review the assumptions shown on the calculator before using the result.
Formula
percentage = part ÷ whole × 100
Example
Enter X and Y to see several common percentage relationships at once.
Frequently asked questions
What does the percentage calculator show?
Answer common percentage questions, including a percentage of a number, what percent one number is of another, and percentage change.
Are the results exact?
The result is calculated from the inputs and assumptions shown on this page. For important financial, health, tax, or legal decisions, verify the result with an appropriate professional or authoritative source.