Percentage Calculator
Three percentage calculators in one — find X% of Y, what % is X of Y, and percentage change.
How percentages work
A percentage is a fraction expressed out of 100. "Per cent" literally means "per hundred" in Latin. Percentages are used everywhere from exam marks to GST rates to sale discounts.
Common percentage calculations in India
GST rates in India are 0%, 5%, 12%, 18% or 28%. Use "X% of Y" to find how much GST to add to a base price.
If you scored 432 out of 600, use "X is what % of Y" to find your percentage: 432 ÷ 600 × 100 = 72%.
If your salary rose from ₹50,000 to ₹58,000, the hike percentage is (8000 ÷ 50000) × 100 = 16%.
Frequently asked questions
What is the difference between percentage and percentile?
A percentage is a fraction of a whole, expressed out of 100 (e.g., you scored 72%). A percentile is a ranking position — scoring in the 90th percentile means you scored higher than 90% of all test-takers, regardless of the actual score.
How do I calculate GST-inclusive price from GST-exclusive price?
If GST rate is 18%, the inclusive price = exclusive price × 1.18. To find the exclusive price from an inclusive price: exclusive = inclusive ÷ 1.18. This is sometimes called "reverse GST" calculation.
What does a negative percentage change mean?
A negative percentage change means the new value is lower than the old value — a decrease. For example, if a product's price drops from ₹1000 to ₹750, the change is −25%.
Can percentage change exceed 100%?
Yes. If something doubles in value, the percentage increase is 100%. If it triples, it is 200% increase. There is no upper limit. However, something can only decrease by a maximum of 100% (to zero).
How do I calculate a percentage of a percentage?
Multiply the two percentages and divide by 100. For example, 20% of 15% = (20 × 15) ÷ 100 = 3%. This is useful for compound discount calculations.