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Year 8 Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 2 — Answers

Answer sheet with worked solutions for the Year 8 percentages worksheet.

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Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Percentages

Year 8 Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 2 — Answers

Percentage change = change ÷ original amount × 100. Always divide by the original amount.

1.A price changes from $520 to $494. Find the percentage decrease.

Answer: 5%

  1. Change = 520 − 494 = 26
  2. 26 ÷ 520 × 100 = 5%
2.A price changes from $280 to $168. Find the percentage decrease.

Answer: 40%

  1. Change = 280 − 168 = 112
  2. 112 ÷ 280 × 100 = 40%
3.A price changes from $520 to $728. Find the percentage increase.

Answer: 40%

  1. Change = 728 − 520 = 208
  2. 208 ÷ 520 × 100 = 40%
4.A price changes from $500 to $625. Find the percentage increase.

Answer: 25%

  1. Change = 625 − 500 = 125
  2. 125 ÷ 500 × 100 = 25%
5.A price changes from $780 to $897. Find the percentage increase.

Answer: 15%

  1. Change = 897 − 780 = 117
  2. 117 ÷ 780 × 100 = 15%
6.After a 75% increase, a price is $140. What was the original price?

Answer: $80

  1. New price = 175% of the original
  2. Original = 140 ÷ 1.75
  3. = $80
7.After a 15% increase, a price is $69. What was the original price?

Answer: $60

  1. New price = 115% of the original
  2. Original = 69 ÷ 1.15
  3. = $60
8.A price changes from $400 to $280. Find the percentage decrease.

Answer: 30%

  1. Change = 400 − 280 = 120
  2. 120 ÷ 400 × 100 = 30%
9.A price changes from $400 to $340. Find the percentage decrease.

Answer: 15%

  1. Change = 400 − 340 = 60
  2. 60 ÷ 400 × 100 = 15%
10.A price changes from $500 to $440. Find the percentage decrease.

Answer: 12%

  1. Change = 500 − 440 = 60
  2. 60 ÷ 500 × 100 = 12%
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