Free Percentage Calculator
Calculate percentages, percentage increases, decreases and find what percentage one number is of another.
What is X% of Y?
Find a percentage of a number.
X is What Percentage of Y?
Find what percentage one number represents of another.
Percentage Increase or Decrease
Calculate the percentage change between two values.
How to Use the Percentage Calculator
The ToolNest Percentage Calculator provides several common percentage calculations in one place. Enter the numbers required for the calculation and click the corresponding Calculate button.
All calculations are performed instantly in your browser, making the tool useful for everyday calculations, shopping, discounts, schoolwork, business calculations and more.
What Is a Percentage?
A percentage represents a number as a fraction of 100. The percentage symbol is written as %. For example, 25% means 25 out of 100.
Common Percentage Calculations
Finding a Percentage of a Number
To calculate X% of Y, multiply Y by X and divide the result by 100.
For example, 20% of 500 is 100.
Finding What Percentage One Number Is
To find what percentage X is of Y, divide X by Y and multiply the result by 100.
For example, 50 is 25% of 200.
Percentage Increase or Decrease
Percentage change compares an original value with a new value. A positive result represents an increase, while a negative result represents a decrease.
Where Can a Percentage Calculator Be Used?
- Shopping discounts
- Tax calculations
- Business calculations
- Exam and school results
- Salary increases
- Price changes
- Budget calculations
- Profit and loss calculations
Frequently Asked Questions
Is this Percentage Calculator free?
Yes. The ToolNest Percentage Calculator is completely free to use and does not require registration.
How do I calculate 20% of 500?
Enter 20 as the percentage and 500 as the number in the first calculator. The result is 100.
How do I calculate percentage increase?
Enter the original value and the new value in the Percentage Increase or Decrease calculator. It will calculate the percentage change automatically.
Can I calculate percentage decrease?
Yes. Enter a new value that is lower than the original value and the calculator will show the percentage decrease.
Does the calculator work on mobile?
Yes. The Percentage Calculator is responsive and works on phones, tablets and desktop computers.