Percentage Calculator
Free online tool to calculate percentages and percentage changes
Percentage Calculator
About Percentage Calculator
Our percentage calculator helps you perform various percentage calculations quickly and easily. Whether you need to find a percentage of a number, calculate what percent one number is of another, or determine percentage changes, this tool has you covered.
Basic Percentages
Calculate what percentage of a number is another number
Percentage Change
Calculate the percentage increase or decrease between two values
Multiple Calculations
Perform different types of percentage calculations in one place
How to Use
- Select calculation type: Choose between Basic, Percent Of, or Percent Change
- Enter values: Input the numbers you want to calculate with
- Click Calculate: Get your result instantly
- View result: See the percentage calculation with a detailed explanation
Common Percentage Calculations
Finding a Percentage of a Number
To find a percentage of a number, multiply the percentage (divided by 100) by the number.
Example: 25% of 80
(25 ÷ 100) × 80 = 0.25 × 80 = 20
Example: 150% of 40
(150 ÷ 100) × 40 = 1.5 × 40 = 60
Finding What Percent One Number is of Another
To find what percent one number is of another, divide the first number by the second and multiply by 100.
Example: What percent is 15 of 60?
(15 ÷ 60) × 100 = 0.25 × 100 = 25%
Example: What percent is 90 of 60?
(90 ÷ 60) × 100 = 1.5 × 100 = 150%
Calculating Percentage Increase
To find the percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100.
Example: Increase from 50 to 75
((75 - 50) ÷ 50) × 100 = (25 ÷ 50) × 100 = 0.5 × 100 = 50%
Calculating Percentage Decrease
To find the percentage decrease, subtract the new value from the original value, divide by the original value, and multiply by 100.
Example: Decrease from 80 to 60
((80 - 60) ÷ 80) × 100 = (20 ÷ 80) × 100 = 0.25 × 100 = 25%
Frequently Asked Questions
About Percentage Calculator
Our percentage calculator helps you perform various percentage calculations quickly and easily. Whether you need to find a percentage of a number, calculate what percent one number is of another, or determine percentage changes, this tool has you covered.
Basic Percentages
Calculate what percentage of a number is another number
Percentage Change
Calculate the percentage increase or decrease between two values
Multiple Calculations
Perform different types of percentage calculations in one place
How to Use
- Select calculation type: Choose between Basic, Percent Of, or Percent Change
- Enter values: Input the numbers you want to calculate with
- Click Calculate: Get your result instantly
- View result: See the percentage calculation with a detailed explanation
Common Percentage Calculations
Finding a Percentage of a Number
To find a percentage of a number, multiply the percentage (divided by 100) by the number.
Example: 25% of 80
(25 ÷ 100) × 80 = 0.25 × 80 = 20
Example: 150% of 40
(150 ÷ 100) × 40 = 1.5 × 40 = 60
Finding What Percent One Number is of Another
To find what percent one number is of another, divide the first number by the second and multiply by 100.
Example: What percent is 15 of 60?
(15 ÷ 60) × 100 = 0.25 × 100 = 25%
Example: What percent is 90 of 60?
(90 ÷ 60) × 100 = 1.5 × 100 = 150%
Calculating Percentage Increase
To find the percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100.
Example: Increase from 50 to 75
((75 - 50) ÷ 50) × 100 = (25 ÷ 50) × 100 = 0.5 × 100 = 50%
Calculating Percentage Decrease
To find the percentage decrease, subtract the new value from the original value, divide by the original value, and multiply by 100.
Example: Decrease from 80 to 60
((80 - 60) ÷ 80) × 100 = (20 ÷ 80) × 100 = 0.25 × 100 = 25%