Percentage Calculator
Our free percentage calculator handles every type of percentage problem: find what percent of a number, calculate percentage change between two values, and compute percentage increase or decrease.
Percentage Calculator
percentage calculator
How It Works
Formula
% of: Result = (X/100) × Y What %: Result = (X/Y) × 100 % Change: Result = ((Y-X)/X) × 100
Examples
25% of 200
Basic percentage of a number.
Change from 80 to 100
Percentage increase from 80 to 100 = 25%.
Frequently Asked Questions
How do I calculate a percentage of a number?
To find X% of Y: multiply Y by X, then divide by 100. For example, 25% of 200 = (200 × 25) / 100 = 50.
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.
How do I add a percentage to a number?
To increase a number by X%: multiply the number by (1 + X/100). For example, 200 + 15% = 200 × 1.15 = 230.
Related Calculators
Tip Calculator
Free tip calculator. Calculate restaurant tips and split the bill between multip...
Discount Calculator
Free discount calculator. Find the sale price and how much you save on any perce...
PopularSales Tax Calculator
Free sales tax calculator. Add sales tax to a price or remove tax from a total. ...
Popular