Percentage Calculator
Calculate percentages quickly and accurately with our free online percentage calculator. Find a percentage of a number, determine what percentage one number is of another, or calculate percentage increase and decrease.
What is X% of Y?
X is what percent of Y?
Percentage Increase or Decrease
How to Calculate a Percentage
A percentage shows a number as a part of 100. Percentages are commonly used for discounts, price changes, test scores, business calculations, statistics, finance, and everyday math. Our free percentage calculator makes these calculations quick and simple without requiring manual formulas.
How to Find a Percentage of a Number
To calculate a percentage of a number, convert the percentage into a decimal and multiply it by the number. For example, to find 20% of 500, multiply 20 by 500 and divide the result by 100. The answer is 100.
The basic formula is: Percentage × Number ÷ 100
How to Calculate What Percentage One Number Is of Another
To find what percentage one number is of another, divide the first number by the second number and multiply the result by 100. For example, 50 is 25% of 200.
The formula is: (Part ÷ Whole) × 100
How to Calculate Percentage Increase or Decrease
Percentage change compares an original value with a new value. Subtract the original value from the new value, divide the difference by the original value, and multiply by 100.
The formula is: ((New Value − Original Value) ÷ Original Value) × 100
Where Can a Percentage Calculator Be Used?
A percentage calculator can be useful for shopping discounts, exam scores, salary changes, business reports, financial calculations, statistics, profit and loss calculations, tax calculations, and many other everyday situations.
Frequently Asked Questions
What is 20% of 500?
20% of 500 is 100.
How do I calculate a percentage?
Multiply the percentage by the number and divide the result by 100. You can also use the calculator above for instant results.
Can I use this percentage calculator on my phone?
Yes. The calculator is responsive and works on smartphones, tablets, laptops, and desktop computers.
Can this calculator calculate percentage increase and decrease?
Yes. Enter the original value and new value in the percentage change calculator to calculate the percentage increase or decrease.