Percentage Calculator
This calculator covers the three percentage questions people search for most: finding a percentage of a number, finding what percentage one number is of another, and finding percentage change.
Show solution steps
What is the Percentage Calculator?
A percentage is simply a way of expressing a number as a fraction of 100 — "per cent" literally means "per hundred." It's one of the most-used bits of everyday maths, showing up in discounts and price markups, exam and attendance marks, interest rates, GST and tax slabs, and describing how much something has grown or shrunk.
How to Calculate
This tool covers the three percentage questions people actually need day to day: finding a percentage of a number (like a 20% discount on ₹500), finding what percentage one number is of another (like 45 out of 60 marks), and finding the percentage change between two numbers (like a salary that went from ₹40,000 to ₹46,000). Pick the mode that matches your question and enter the two numbers involved.
Formula
X% of Y: (X/100) × Y
X is what % of Y: (X/Y) × 100
% change from X to Y: ((Y − X) / X) × 100
Worked Example
20% of 200 = 40. 40 is 20% of 200. The percentage change from 100 to 150 is +50%.
How to Use
- Choose which of the three calculations you need.
- Enter the two numbers involved.
- Read the result instantly.