Discount Formula
The formula to calculate discount is very simple:
Discount Amount = (Original Price × Discount %) / 100
Final Price = Original Price - Discount Amount
Example
If a T-shirt costs ₹1,000 and has a 20% discount:
Discount = (1000 × 20) / 100 = ₹200.
Final Price = 1000 - 200 = ₹800.
Double Discounts
Some shops offer "50% + 20% Off". This does NOT mean 70% off. It means 50% off the original price, and then 20% off the reduced price.
Example: ₹1000 -> 50% off = ₹500. Then 20% off ₹500 = ₹400 (Final Price). Total discount is actually 60%.