Percentage Calculator

About This Calculator

This percentage calculator helps you calculate percentages, percentage change, and percentage difference between two numbers. It's useful for calculating discounts, tax rates, and more.

Result

How to Use This Calculator

  1. Select the type of percentage calculation you want to perform.
  2. Enter the required values in the input fields.
  3. Click the "Calculate" button to see the result.
  4. Use the "Reset" button to clear all inputs and start over.

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Calculator Information

This calculator can perform three types of percentage calculations:

  • What is X% of Y? - Calculates what percentage X is of value Y.
  • Percentage Change - Calculates the percentage change between an old value and a new value.
  • Percentage Difference - Calculates the percentage difference between two values.

Formulas Used

The formulas used in this calculator are:

  • Result = (Percentage / 100) × Value
  • Percentage Change = ((New Value - Old Value) / Old Value) × 100
  • Percentage Difference = |(Value1 - Value2) / ((Value1 + Value2) / 2)| × 100

Frequently Asked Questions

A percentage is a way to express a number as a fraction of 100. It is often denoted using the percent sign, "%". For example, 45% is equal to 45/100, or 0.45.

To calculate a percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. For example, if a price increased from $50 to $60, the percentage increase would be ((60 - 50) / 50) × 100 = 20%.

Percentage change measures the relative change between an old value and a new value, while percentage difference measures the absolute difference between two values as a percentage of their average. Percentage change is directional (can be positive or negative), while percentage difference is always positive.