Percentage Calculator

Calculate marks percentage, reverse percentage, and percentage change instantly

Marks to Percentage

Reverse Percentage (What is X% of Y?)

Percentage Change (Increase/Decrease)

How to Use

  1. 1For marks percentage: Enter marks obtained and total marks
  2. 2For reverse percentage: Enter percentage and value to find X% of Y
  3. 3For percentage change: Enter old value and new value
  4. 4Results calculate instantly as you type
  5. 5Use this for exam marks, discounts, salary hikes, and more

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Frequently Asked Questions

How do I calculate percentage from marks?▼
Divide marks obtained by total marks, then multiply by 100. For example, if you got 85 out of 100, your percentage is (85/100) × 100 = 85%.
What is reverse percentage?▼
Reverse percentage finds what X% of a number is. For example, 25% of 200 = (25/100) × 200 = 50. This is useful for calculating discounts, tips, or portions.
How do I calculate percentage increase or decrease?▼
Subtract old value from new value, divide by old value, then multiply by 100. For example, if price increased from 100 to 150, change = ((150-100)/100) × 100 = 50% increase.
Why is this calculator useful for students?▼
Indian students need this after every exam to calculate their percentage. It's also useful for understanding grade conversions, scholarship eligibility, and comparing performance across subjects.

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