Percentage Calculator

Calculate percentages easily. Find what percentage of a number is, calculate discounts, tips, and percentage changes.

Standard Percentage Calculations

% of
is
10% of 200 is 20.0

Percentage Change Calculation

Percentage Change

25.0% increase
Formula: ((new - old) ÷ old) × 100
The change from 100 to 125 is a increase of 25.0%

Frequently Asked Questions

How do I calculate a percentage?

To calculate a percentage, multiply the value by the percentage and divide by 100. For example, 15% of 200 = (15 × 200) ÷ 100 = 30.

How do I calculate percentage change?

To calculate percentage change, subtract the old value from the new value, divide by the old value, and multiply by 100. For example, if a value changes from 100 to 125, the percentage change is ((125 - 100) ÷ 100) × 100 = 25% increase.

What is this calculator useful for?

This calculator is perfect for calculating discounts, tips, tax amounts, interest rates, price changes, growth rates, and any percentage-based calculations.

How accurate are the calculations?

Our calculator provides results accurate to 2 decimal places for standard calculations and 1 decimal place for percentage changes, which is sufficient for most percentage calculations.