% of Number · % Change · Discount · GST · Marks · Profit/Loss · Reverse % · Salary
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Find: What is X% of Y?
Quick: What % is A of B?
Calculate % increase or decrease between two values
Or: Increase/Decrease a number by %
Calculate sale price, savings and effective discount
5% Off10% Off20% Off25% Off30% Off40% Off50% Off70% Off
Add or remove GST with CGST/SGST/IGST breakdown
Single subject or multi-subject marks percentage calculator
Multi-subject calculator (up to 6 subjects):
Subject
Obtained
Max Marks
%
Calculate profit or loss percentage on investments, trades, business
Find the original value before a percentage was added or removed
Breakdown your salary into percentages — PF, tax, and in-hand
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% Percentage Calculator India 2026 — 8 Calculators in One
Percentage is one of the most fundamental concepts in mathematics — used every day in shopping discounts, exam results, GST calculations, salary slips, investment returns, business profit/loss, and government statistics. SuccessMate's free Percentage Calculator gives you 8 specialized percentage tools in one page: (1) % of Number — find what X% of any number is; (2) % Change — calculate percentage increase or decrease between two values; (3) Discount Calculator — find sale price, savings amount, and effective discount with quick presets (5%, 10%, 20%, 50%, 70% off); (4) GST Calculator — add or remove GST at 5%, 12%, 18%, or 28% with full CGST/SGST/IGST breakdown; (5) Marks % — single subject and multi-subject (up to 6) with grade and division; (6) Profit/Loss % — for traders, investors, and business owners; (7) Reverse % — find original value before GST or discount was applied; (8) Salary % — breakdown gross salary into PF, tax, and in-hand percentage.
This tool is widely used by: students (calculating CBSE, ICSE, JEE, NEET marks percentage); shoppers (Flipkart, Amazon, Myntra sale discount calculations); business owners (GST on invoices, profit margins); investors (stock market returns, mutual fund growth); HR and employees (PF percentage, salary hike percentages). All calculations are instant, formula-shown, and 100% accurate — no login required.
📚 Percentage Formulas — Complete Reference India 2026
% of Number: Result = (P ÷ 100) × N. Example: 18% of ₹5,000 = ₹900. % Change: Change% = ((New - Old) ÷ Old) × 100. Example: ₹1,000 to ₹1,200 = +20%. Discount: Sale Price = Original × (1 - D/100). Example: ₹2,000 with 30% off = ₹1,400. GST (Add): GST Amount = Price × Rate/100. Total = Price + GST. CGST = SGST = GST/2 (for intra-state). GST (Remove): Original = Final ÷ (1 + Rate/100). Marks %: Percentage = (Obtained ÷ Total) × 100. Profit/Loss %: P/L% = ((SP - CP) ÷ CP) × 100. Reverse %: Original = Final ÷ (1 + P/100).
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❓ Frequently Asked Questions — Percentage Calculator India 2026
How to calculate percentage of marks? ▾
Formula: Percentage = (Marks Obtained / Total Marks) x 100. Example: 450 out of 500 = (450/500) x 100 = 90%. For multiple subjects: add all obtained marks, divide by total possible marks, multiply by 100. Use our Marks tab for single or multi-subject calculations with automatic grade and division (First Class, Second Class, etc.).
How to calculate discount percentage? ▾
Sale Price = Original Price x (1 - Discount%/100). Example: Rs 2,000 with 30% off = 2000 x 0.70 = Rs 1,400. Discount Amount = Rs 600. You saved 30%. Use our Discount tab with quick presets for 5%, 10%, 20%, 25%, 30%, 40%, 50%, and 70% off — perfect for Flipkart, Amazon, Myntra, and Meesho sale calculations.
How to calculate percentage increase or decrease? ▾
% Change = ((New Value - Old Value) / Old Value) x 100. If positive = % increase. If negative = % decrease. Example 1 (increase): Salary from Rs 40,000 to Rs 46,000 = ((46000-40000)/40000) x 100 = 15% increase. Example 2 (decrease): Price from Rs 500 to Rs 425 = ((425-500)/500) x 100 = -15% (15% decrease). This is also used for stock market returns, inflation rates, GDP growth.
What is reverse percentage? How to find original price before discount or GST? ▾
Reverse percentage finds the original value before a percentage was applied. Formula: Original = Final / (1 + P/100) if percentage was added; Original = Final / (1 - P/100) if percentage was removed. Example (GST removed): Item costs Rs 1,416 including 18% GST. Original price = 1416/1.18 = Rs 1,200. Example (discount applied): You paid Rs 840 after 30% discount. Original price = 840/(1-0.30) = 840/0.70 = Rs 1,200.
How to calculate profit and loss percentage? ▾
Profit% = ((Selling Price - Cost Price) / Cost Price) x 100. Loss% = ((Cost Price - Selling Price) / Cost Price) x 100. Example (profit): Bought shares at Rs 100, sold at Rs 135 = (35/100) x 100 = 35% profit. Example (loss): Bought flat for Rs 50 lakh, sold for Rs 45 lakh = (5/50) x 100 = 10% loss. Also used for: business profit margins, mutual fund returns, stock portfolio performance, real estate appreciation.
How to calculate percentage of salary hike? ▾
Salary Hike % = ((New Salary - Old Salary) / Old Salary) x 100. Example: CTC goes from Rs 8 lakh to Rs 9.6 lakh = (1.6/8) x 100 = 20% hike. For PF: Employee contributes 12% of Basic salary. Employer contributes 12% (8.33% to EPS + 3.67% to EPF). Use our Salary % tab to see the breakdown of your gross salary into PF, estimated tax, and approximate in-hand amount.
What is the grade percentage system in India? ▾
Common grading in India: 90% and above = A+ / O (Outstanding) / Distinction; 80-89% = A / First Class with Distinction; 70-79% = B+ / First Class; 60-69% = B / Second Class; 50-59% = C / Pass Class; Below 50% = F / Fail. CBSE uses a 10-point CGPA scale where CGPA x 9.5 = approximate percentage. JEE, NEET, UPSC use their own percentile and percentage systems. Our Marks calculator shows grade, division, and class automatically.