Percentage Calculator

What is Percentage?

A percentage is a way of expressing a number as a fraction of 100. The word "percent" comes from the Latin "per centum," meaning "by the hundred." Percentages are used extensively in everyday life for calculating discounts, interest rates, exam marks, tax rates, growth rates and much more. Understanding percentages is a fundamental math skill used in academics, finance and daily transactions.

How to Use This Percentage Calculator

1. To find X% of Y: Enter the percentage value and the number, then click "Calculate."

2. To find what percentage X is of Y: Enter both values and click "Calculate."

3. To find percentage increase or decrease: Enter the old value and new value, then click "Calculate."

Percentage Formulas

Finding X% of Y: Result = (X / 100) x Y. For example, 20% of 500 = (20/100) x 500 = 100.

What percentage is X of Y: Percentage = (X / Y) x 100. For example, 150 is what % of 600? Answer: (150/600) x 100 = 25%.

Percentage change: Change = [(New Value - Old Value) / Old Value] x 100. A positive result indicates an increase and a negative result indicates a decrease.

Frequently Asked Questions

How do I calculate percentage of marks?

To find the percentage of marks scored in an exam, divide the marks obtained by the total marks and multiply by 100. For example, if you scored 420 out of 500, your percentage = (420/500) x 100 = 84%.

How do I calculate a discount percentage?

Discount percentage = [(Original Price - Sale Price) / Original Price] x 100. For example, if an item's MRP is Rs 2,000 and the sale price is Rs 1,500, the discount = [(2000-1500)/2000] x 100 = 25%.

What is the difference between percentage and percentile?

Percentage is a value out of 100 representing a portion of a whole. Percentile indicates the rank or position relative to others in a dataset. For example, scoring in the 90th percentile means you scored better than 90% of the participants, regardless of the actual percentage of marks.