Percentage · lesson 16 of 20 · free

Loss percentage — How to calculate percentage

If the selling price is less than the cost price, the shopkeeper makes a loss. Loss percentage — just like profit percentage — is always worked out on the cost price.

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How to work it out

Still on the cost price — “loss % = loss ÷ cost price × 100”

  1. Loss = CP − SP.
  2. Loss % = loss ÷ CP × 100.
  3. Selling at p% loss: SP = CP − p% of CP.

Use it for: Selling old things, stock that does not sell, and Class 7–8 profit and loss sums.

🧮 Check your own sums with the free Percentage calculator — it shows the working.

Worked example: A shopkeeper buys a torch for ₹250 and sells it at a loss of 12%. What is the selling price, in rupees? → 220

  1. The loss is 12% of the cost price, ₹250.
  2. 12% of 250 = 12 × 250 ÷ 100.
  3. 12 × 250 = 3000. Divide by 100 (take away two zeros): 3000 ÷ 100 = 30.
  4. Selling price = 250 − 30 = 220.

Check: 30 ÷ 250 × 100 = 12% ✓

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🏁 Lesson 16 test

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🖨️ Loss Percentage Worksheet

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