Percentage Calculator
Calculate percentages, find percentage of numbers, and compute percentage changes.
Percentage Calculation
Result
Enter values to see results
About This Calculator
The Percentage Calculator helps you solve common percentage problems quickly and accurately. Calculate what percentage one number is of another, find a percentage of a number, calculate percentage increases or decreases, and determine percentage changes.
Whether you're calculating discounts, tips, tax, interest rates, or analyzing data changes, this calculator handles all common percentage calculations with clear formulas and explanations.
Formula & Calculation Method
Percentage Formulas:
Percentage: Percentage = (Part ÷ Whole) × 100
Percentage Of: Value = (Percentage ÷ 100) × Base
Increase: New Value = Original × (1 + Percentage/100)
Decrease: New Value = Original × (1 - Percentage/100)
Change: Change % = ((New - Original) ÷ Original) × 100
These formulas are fundamental to understanding percentages. The calculator automatically applies the correct formula based on your selected calculation type.
How to Use This Calculator
- Select Calculation Type: Choose what you want to calculate (percentage, percentage of, increase, decrease, or change).
- Enter Values: Input the required numbers based on the selected calculation type.
- View Result: See the calculated result with the formula used.
- Copy/Share: Use the copy or share buttons to save or share your calculation.
- Learn: Review the formula explanation to understand how the calculation works.
Frequently Asked Questions
How do I calculate what percentage one number is of another?
Use the "Percentage" mode. Enter the part (smaller value) and the whole (larger value). The result shows what percentage the part represents of the whole.
How do I find a percentage of a number?
Use the "Percentage Of" mode. Enter the percentage (e.g., 25 for 25%) and the base value. The result shows what that percentage equals.
How do I calculate percentage increase?
Use the "Increase" mode. Enter the original value and the percentage increase. The result shows the new value after the increase.
What is percentage change?
Percentage change shows how much a value has changed relative to the original value. Use the "Change" mode to calculate the percentage difference between two values. A positive result means an increase, negative means a decrease.
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