Percentage Calculator (Marks, Increase, Decrease)

Percentage kya hota hai?

"Percent" means "per hundred". When we say 45%, we mean 45 out of every 100. Percentages make it easy to compare things of different sizes – for example 432 marks out of 500 and 360 out of 400 can be compared only after converting both into percentage (86.4% and 90%). This percentage calculator solves the four most common percentage questions that students, shopkeepers and salaried people face every day.

1. Marks percentage formula

Example: 432 out of 500 → 432 ÷ 500 × 100 = 86.4%. For CBSE "best of five" percentage, add the marks of your best five subjects and divide by 500. Board result, college admission forms and job applications all ask for this number, so keep it handy.

2. X% of a number

Example: 15% of 2,400 = 360. Use this to calculate tips, commission, GST amount, or how much 30% attendance shortage means in classes.

3. What percent is A of B?

Example: 45 is 75% of 60. Teachers use this for attendance percentage (days present ÷ total days × 100) and businesses use it for profit share.

4. Percentage increase or decrease

Example: salary from ₹25,000 to ₹30,000 is a 20% hike. Price falling from ₹500 to ₹400 is a 20% decrease. Remember: a 20% increase followed by a 20% decrease does not bring you back to the same number, because the base changes.

Quick tips

• 10% of any number = move the decimal one place left (10% of 850 = 85).
• 5% = half of 10%, 20% = double of 10%, 25% = one-fourth.
• To convert a fraction into percentage, multiply by 100 (3/8 = 37.5%).

Sab results type karte hi live update hote hain, isliye aap alag-alag numbers try karke turant compare kar sakte hain.