Percentage Calculator
Calculate percentage, marks percentage, exam percentage, and percentage increase or decrease quickly.
To find marks needed for your target, enter the maximum marks still available.
Percentage Calculator: Quick Answer
A percentage tells you how much something represents out of 100. You can use this percentage calculator to calculate marks percentage, exam percentage, and other basic percentage calculations.
The basic percentage formula is: Percentage = (Part ÷ Whole) × 100.
How to Calculate Percentage
To calculate a percentage manually, divide the part by the whole and multiply the answer by 100.
Percentage = (Part ÷ Whole) × 100
For example, if you score 45 marks out of 60:
(45 ÷ 60) × 100 = 75%
So, 45 out of 60 is 75%.
How to Calculate Marks Percentage
To calculate marks percentage, divide the total marks obtained by the total maximum marks and multiply by 100.
Marks Percentage = (Marks Obtained ÷ Maximum Marks) × 100
For example, if you get 420 marks out of 500:
(420 ÷ 500) × 100 = 84%
Your marks percentage is 84%.
How to Calculate Exam Percentage
For an exam with several subjects, first add the marks obtained in all subjects. Then add the maximum marks for all subjects. Finally, divide the total marks obtained by the total maximum marks and multiply by 100.
For example:
- Total marks obtained = 420
- Total maximum marks = 500
- Percentage = (420 ÷ 500) × 100
- Exam percentage = 84%
You can enter each subject separately in the calculator above.
How to Find Marks Needed for a Target Percentage
This calculator can also help you find how many marks you need to reach a target percentage. Enter your current marks, your desired percentage, and the maximum marks still available.
For example, if you want to reach a target percentage in your next exam, enter the maximum marks available in the Remaining / upcoming maximum marks field. The calculator will show the marks needed when the target can be reached.
Easy Percentage Examples
- 10% of 200 = 20.
- 25% of 80 = 20.
- 50% of 300 = 150.
- 45 out of 60 = 75%.
- 80 out of 100 = 80%.
- 420 out of 500 = 84%.
Percentage Increase and Decrease
Percentage increase shows how much a value has increased compared with its original value. Percentage decrease shows how much a value has decreased compared with its original value.
For example, if a value changes from 100 to 120, the increase is 20. Compared with the original value of 100, this is a 20% increase.
When calculating percentage change, always compare the change with the original value.
Common Percentage Calculation Mistakes
- Using the wrong number as the whole or reference value.
- Adding subject marks but forgetting to add the maximum marks.
- Using one subject's maximum marks instead of the total maximum marks.
- Confusing percentage points with percentage change.
- Forgetting that a percentage is based on a reference number.
Frequently Asked Questions
How do I calculate a percentage manually?
Divide the part by the whole and multiply by 100. For example, 45 out of 60 is (45 ÷ 60) × 100 = 75%.
What is the percentage formula?
The basic percentage formula is: Percentage = (Part ÷ Whole) × 100.
How do I calculate marks percentage?
Divide the marks obtained by the maximum marks and multiply by 100. For example, 80 marks out of 100 is 80%.
How do I calculate exam percentage?
Add all marks obtained, add all maximum marks, divide the total obtained marks by the total maximum marks, and multiply by 100.
What is 20% of 500?
20% of 500 is 100.
How do I calculate percentage from total marks?
Divide the total marks obtained by the total maximum marks and multiply by 100. For example, 420 out of 500 gives 84%.
How can I calculate the marks needed for a target percentage?
Enter your current marks, desired target percentage, and the maximum marks still available in the calculator above.