Percentage Calculator
Find a percentage of a number, what percent one number is of another, and percent change.
How it works
Enter two numbers to see all three results: A percent of B, A as a percent of B, and the percent change from A to B.
Formula
A% of B = A ÷ 100 × B; A is what % of B = A ÷ B × 100; Change = (B − A) ÷ |A| × 100
Example
20% of 150 is 30. Also, 20 is 13.33% of 150, and going from 20 to 150 is a 650% increase.
FAQ
How do I calculate a discount?
Use "A% of B" with the discount percent as A and the price as B, then subtract.
Why is a result a dash?
Dividing by zero is undefined.
Related calculators
- Salary CalculatorConvert any pay amount into yearly, monthly, biweekly, weekly, daily and hourly pay.
- Compound Interest CalculatorSee how savings grow with compound interest and regular monthly contributions.
- Car Loan CalculatorEstimate your monthly car payment and total interest for an auto loan.
Related guides
Guides are coming soon. Visit the guides page.