Percentage Calculator
Calculate percentages, percentage change, and percentage of a number.
Result
X is
of Y
About Percentage Calculator
Three calculators in one: find what percentage X is of Y, calculate X% of any number, and find percentage increase or decrease between two values. Essential for discounts, marks, statistics, and financial calculations.
Use Cases
Calculating exam marks percentage, finding discount savings, computing tax amounts, measuring growth rates, splitting bills.
How It Works
Applies the three core percentage formulas: (part/whole)×100, (percent/100)×whole, and ((new-old)/old)×100 based on which mode you select.
Frequently Asked Questions
How do I find what % one number is of another?
Use Mode 1: enter both numbers and it gives you (X/Y)×100.
How do I calculate a percentage increase?
Use Mode 3: enter the original value and the new value to get the % change.