Overview
A percentage expresses a part of a whole out of 100. It appears in discounts, taxes, grades and interest. Enter the percentage and the base value to get the result instantly, with the steps explained.
Formula
Result = value × percentage ÷ 100
How it works
Convert the percentage to a decimal
Divide the percentage by 100. Example: 25% = 0.25.
Multiply by the base value
Multiply the base value by the decimal.
Read the result
The result is the requested part of the base value.
Worked examples
Example 1: 25% discount
If a product costs $200, the discount is 200 × 25 ÷ 100 = $50.
Example 2: 7.5%
7.5% of 1,200 = 1,200 × 7.5 ÷ 100 = 90.
Frequently asked questions
How do I calculate a percentage without a calculator?
Divide the percentage by 100, then multiply by the base value. Example: 20% of 150 = 0.2 × 150 = 30.
What is the difference between a percentage and a percentage point?
A percentage is a part of 100, while a percentage point describes the difference between two percentages. Going from 10% to 12% is a two-percentage-point increase, not 2%.
How do I find the price after a discount?
Subtract the discount from the original price, or use our discount calculator to get the final price directly.
Can a percentage be negative?
Mathematically yes, but this calculator accepts positive values for simplicity. Use the percentage change calculator for negative comparisons.
How precise is the result?
The result is rounded to four decimal places. You can round it further as needed.
This calculator is for educational and informational purposes only and is not a substitute for professional advice.