Percentage Calculator
Calculate percentages in three different ways
How to Use
- Choose a calculation mode: "X% of Y", "X is what % of Y", or "% change"
- Enter the required values
- See the result instantly
FAQ
How do I calculate percentage change?
Percentage change = ((New Value - Old Value) / Old Value) × 100. A positive result means an increase, negative means a decrease.
What is the formula for "X% of Y"?
To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 150 = 150 × 20 / 100 = 30.