Calculate Percentages Easily Online

How to Use the Percentage Calculator and Formula with Examples

What is Percentage Calculator?

A percentage calculator is a quick and easy tool that helps you calculate what a specified percent of a number is. Whether you’re a student checking exam marks, or a shopper figuring out discounts, this calculator saves time and avoids manual calculation errors.

You just enter the main value and the required percentage, and the calculator gives the result instantly with steps. This ensures clarity and boosts confidence in everyday maths and academic work.

Formula Behind Percentage Calculator

To find X percent of Y, use: Result = (X / 100) × Y. Here, X is the percentage and Y is the main value. For example, to determine 20% of 70: (20/100) × 70 = 14. This universal formula works for discounts, marks, growths, and more.

Percentage Conversion Table

Calculation	Result
10% of 200	20.00
20% of 70	14.00
30% of 500	150.00
25% of 80	20.00
50% of 60	30.00
5% of 120	6.00
75% of 40	30.00

Steps to Use Percentage Calculator

Enter the main value (e.g., marks, price, etc.).
Input the desired percentage to calculate.
Click "Calculate" to get the result instantly with logic shown.

Why Use Vedantu’s Percentage Calculator?

This tool gives instant, error-free answers for percent calculations. You see not only the answer, but also the simple calculation steps, making it ideal for learning and homework help.

It’s mobile-friendly and touch-optimised, so students can solve "what is X% of Y" problems in just a tap. Trusted by millions for CBSE, ICSE, and all board exam prep, it brings learning and math in one place.

Applications of Percentage Calculator

You’ll use percentage calculations in many real-world situations: checking your exam marks (like "what is 35% out of 80?"), working out shopping discounts ("25% off ₹1200"), and in business to track profit or growth rates.

Other uses include calculating salary hikes, comparing statistics, and working out interest, loss, or gain. For specific needs, Vedantu also offers the Percentage Off Calculator and Percentage Increase Calculator for focused calculations.

Strengthen your maths basics using this alongside popular resources such as Prime Numbers, HCF Calculator, and Multiples in Maths – all key for academic excellence.

FAQs on Calculate Percentages Easily Online

1. How do I calculate a percentage?

To calculate a percentage, divide the value you want to express as a percentage by the total value, then multiply the result by 100. For example, to find what percentage 15 is of 60, you would calculate (15/60) * 100 = 25%. This means 15 is 25% of 60.

2. What is the formula for calculating percentage increase?

The formula for percentage increase is: [(New Value - Original Value) / Original Value] x 100. For instance, if a price increases from ₹100 to ₹120, the percentage increase is [(120 - 100) / 100] x 100 = 20%.

3. What is the formula for calculating percentage decrease?

The formula for percentage decrease is: [(Original Value - New Value) / Original Value] x 100. If a price decreases from ₹200 to ₹150, the percentage decrease is [(200 - 150) / 200] x 100 = 25%.

4. How do I calculate the percentage of marks obtained in an exam?

To calculate the percentage of marks, divide the marks obtained by the total marks possible, then multiply the result by 100. For example, if you scored 75 out of 100, your percentage is (75/100) x 100 = 75%.

5. What is 20% of 70?

20% of 70 is calculated as (20/100) * 70 = 14.

6. How do I calculate a discount percentage?

To calculate a discount percentage, subtract the discounted price from the original price, then divide the result by the original price and multiply by 100. For example, if an item was originally ₹300 and is now ₹240, the discount is (300 - 240) / 300 * 100 = 20%.

7. What is the difference between percentage and percentile?

A percentage represents a part of a whole, expressed as a fraction of 100. A percentile, on the other hand, indicates the rank of a value within a dataset. For example, scoring in the 90th percentile means your score is higher than 90% of other scores in that dataset.

8. How can I calculate the percentage change between two numbers?

Calculate the percentage change by finding the difference between the two numbers, dividing this difference by the original number, and then multiplying by 100. This will show whether it’s an increase or decrease.

9. What are some real-life applications of percentage calculations?

Percentages are used extensively in everyday life, including calculating discounts, interest rates, tax, tips, profit margins, exam scores, and expressing proportions in various data analyses.

10. How do I convert a fraction to a percentage?

To convert a fraction to a percentage, divide the numerator by the denominator, then multiply the result by 100. For example, the fraction 3/4 becomes (3/4) * 100 = 75%.

11. How do I calculate percent error?

Percent error is calculated as the absolute difference between an experimental value and a theoretical value, divided by the theoretical value, multiplied by 100. A smaller percent error indicates higher accuracy.