1. SP represent Selling Price
2. CP represent Cost Price
3. Profit or Gain = Selling Price - Cost Price = SP - CP
4. Profit % = (Profit x 100)/CP
5. Loss = Cost price - Selling price = CP - SP
6. Loss %= (Loss x 100)/100
7. Profit or Loss always calculated on Cost price Only.
8. Discount = Marked price - Selling Price = MP - SP