How to calculate percentage of marks?

Divide the marks obtained by total marks and multiply by 100. Example: 420 out of 500 = (420/500) × 100 = 84%.

How to find discount percentage?

Use the percentage change mode: enter original price as 'Old value' and discounted price as 'New value'. The result shows the discount percentage.

What is the difference between percentage and percentile?

Percentage is your score out of total (e.g., 85%). Percentile is your rank relative to others (e.g., 95th percentile means you scored better than 95% of test-takers). This calculator computes percentage, not percentile.

How to calculate salary increment percentage?

Use percentage change mode: enter old salary as 'Old value' and new salary as 'New value'. The result is your increment percentage.

Percentage Calculator

Find percentage of a number, what percent X is of Y, or calculate percentage increase/decrease.

Gratuity PPF EPF / PF EMI SIP FD NPS Income Tax HRA Age GST Percentage BMI

How to use this calculator

1
Choose calculation type
Select from three modes: 'What is X% of Y?', 'X is what % of Y?', or '% increase/decrease'.
2
Enter values
Enter the two numbers in the respective fields.
3
View result
The calculator instantly shows the percentage, result value, or change direction.

Percentage (%)

Value

Result

25% of 20050

Percentage calculations: X% of Y = (X/100) × Y. Percentage change = ((new − old) / |old|) × 100.

Quick answer

Three-in-one percentage calculator: find X% of a number, what percent one number is of another, or the percentage increase/decrease between two values.

Percentage calculations are used everywhere: exam marks, discounts while shopping, salary increments, profit margins, and tax computations. Whether you're a student calculating your board exam percentage or a shopkeeper figuring out discount pricing, this tool gives instant answers.

What is this calculator?

A Percentage Calculator handles three common calculations: (1) What is X% of Y? — e.g., what is 18% of ₹50,000, (2) X is what percent of Y? — e.g., 450 is what % of 600, and (3) Percentage increase/decrease — e.g., price went from ₹200 to ₹250, what's the % increase?

Formula

1. X% of Y = (X / 100) × Y

2. X is what % of Y = (X / Y) × 100

3. % Change = ((New − Old) / |Old|) × 100
   Positive = increase, Negative = decrease

Example

1. What is 18% of ₹50,000? Answer: (18/100) × 50,000 = ₹9,000 2. 450 marks out of 600 is what percentage? Answer: (450/600) × 100 = 75% 3. Salary increased from ₹30,000 to ₹35,000. What is the % increase? Answer: ((35,000 − 30,000) / 30,000) × 100 = 16.67% increase

Scenario snapshots

Exam percentage

Calculate aggregate marks percentage for board exams or competitive tests.

Discount pricing

Find the discounted price or compute what discount percentage was applied.

Decision guide

Choose this when

✓You need quick percentage calculations for exams, shopping, or salary planning.
✓You want to find the percentage change between two values.
✓You need markup or discount calculations for business pricing.

Pick another route when

•You need compound interest or CAGR calculations (use SIP/FD calculators).
•You need weighted average percentage across multiple subjects.

Common mistakes to avoid

!Confusing percentage of (multiplicative) with percentage change (comparative).
!Using 'new value' as the base when calculating percentage increase (base should be the old value).
!Forgetting that a 50% decrease followed by a 50% increase does not return to the original value.

Assumptions and disclaimers

Updated context: 2026

•Simple percentage formulas are used without compounding.
•Division by zero returns 0% instead of an error.

In practice (India)

Percentage calculator searches spike during exam result season in India (CBSE, ICSE, state boards) when students calculate their aggregate percentage. It's also heavily used by shopkeepers during sale season to compute discount prices and profit margins.

For financial planning, percentage calculations help with salary increment computation, EMI-to-income ratio, and investment return comparisons.

Benefits

✓Three calculation modes in one tool: percentage of, what percent, and percentage change.
✓Useful for students (exam marks), shopkeepers (discounts), and salaried professionals (increments).
✓Instant results with no signup or complex inputs.
✓Works on mobile and desktop browsers.

Related calculators and guides

Frequently Asked Questions

How to calculate percentage of marks?: Divide the marks obtained by total marks and multiply by 100. Example: 420 out of 500 = (420/500) × 100 = 84%.
How to find discount percentage?: Use the percentage change mode: enter original price as 'Old value' and discounted price as 'New value'. The result shows the discount percentage.
What is the difference between percentage and percentile?: Percentage is your score out of total (e.g., 85%). Percentile is your rank relative to others (e.g., 95th percentile means you scored better than 95% of test-takers). This calculator computes percentage, not percentile.
How to calculate salary increment percentage?: Use percentage change mode: enter old salary as 'Old value' and new salary as 'New value'. The result is your increment percentage.

This calculator handles basic percentage operations. For weighted averages, compound growth, or statistical percentiles, use specialized tools.