calculator

Percentage Calculator

Percentage Calculator

Calculate percentages easily. Find what percent X is of Y, or calculate percentage increase/decrease.

Result

Configure inputs and run the tool

Results will appear here

About this Percentage Calculator

The Percentage Calculator is a free online math tool that handles three common percentage calculations: finding what X percent of Y is, determining what percent X is of Y, and calculating percentage change between two values. Whether you are computing discounts while shopping, analyzing business growth metrics, or solving math problems, this percentage calculator delivers accurate results instantly without requiring any downloads or sign-ups.

How to use the Percentage Calculator

  1. 1 Enter the first number in the "Value 1" field.
  2. 2 Enter the second number in the "Value 2" field.
  3. 3 Select the calculation type from the dropdown: "What is X% of Y?", "X is what % of Y?", or "% change from X to Y".
  4. 4 Click the Run button to see the calculated result.

Frequently Asked Questions

How do I calculate percentage of a number?
To find what X percent of Y is, the calculator multiplies Y by X and divides by 100. For example, 15% of 200 equals (15 / 100) x 200 = 30. Select the "What is X% of Y?" option to use this calculation.
How is percentage change calculated?
Percentage change measures the relative difference between two values. It is calculated as ((New Value - Old Value) / Old Value) x 100. A positive result indicates an increase, while a negative result indicates a decrease.
Can I use this for financial calculations?
Yes, this percentage calculator is useful for financial tasks like calculating tax amounts, tip percentages, investment returns, discount savings, interest rates, and profit margins. Enter your financial figures as Value 1 and Value 2.
What happens if I divide by zero?
If you select "X is what % of Y?" and enter 0 as Value 2, the division by zero is handled gracefully. The tool checks for valid numbers before performing calculations to prevent errors.

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