Percentage Calculator — Percent, Change & Of
CalculatorThree percentage calculators in one: (1) Find X% of Y, (2) Find what percentage X is of Y, (3) Calculate percentage change between two values. Perfect for calculating exam marks percentage, discount amounts, salary hikes, GST percentages, and profit margins.
Next Step — Complete Your Workflow
Expert Note — India 2026
For Indian income tax purposes: percentage change in salary above 10 lakhs crosses into the 30% slab. A 15% hike on ₹9L CTC (₹1.35L) pushes total to ₹10.35L — moving ₹35,000 into the 30% bracket vs 20%. Use the percentage calculator alongside an income tax calculator to model hike impact.
How to use Percentage Calculator — Percent, Change & Of
- 1Enter your values in the fields above.
- 2Results calculate instantly as you type — no button click needed for most tools.
- 3Copy the result using the Copy button.
- 4Use the Next Step workflow to chain into related tools.
- 5All processing runs locally in your browser. No data is transmitted.
Frequently Asked Questions
How to calculate percentage marks in India?
Percentage = (Total Marks Obtained / Total Maximum Marks) × 100. Example: 450 out of 500 = 90%.
How to calculate percentage increase in salary?
Percentage Increase = ((New Salary - Old Salary) / Old Salary) × 100.
How to calculate GST percentage from total?
GST % of total = (GST Amount / Total Amount) × 100. Or simply use our GST Calculator directly.