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

Answer sheet with worked solutions for the 8th Grade percentages worksheet.

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Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Percentages

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

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

1.A price changes from $280 to $350. Find the percentage increase.

Answer: 25%

  1. Change = 350 − 280 = 70
  2. 70 ÷ 280 × 100 = 25%
2.A price changes from $300 to $255. Find the percentage decrease.

Answer: 15%

  1. Change = 300 − 255 = 45
  2. 45 ÷ 300 × 100 = 15%
3.A price changes from $80 to $32. Find the percentage decrease.

Answer: 60%

  1. Change = 80 − 32 = 48
  2. 48 ÷ 80 × 100 = 60%
4.A price changes from $300 to $360. Find the percentage increase.

Answer: 20%

  1. Change = 360 − 300 = 60
  2. 60 ÷ 300 × 100 = 20%
5.A price changes from $340 to $476. Find the percentage increase.

Answer: 40%

  1. Change = 476 − 340 = 136
  2. 136 ÷ 340 × 100 = 40%
6.A price changes from $720 to $864. Find the percentage increase.

Answer: 20%

  1. Change = 864 − 720 = 144
  2. 144 ÷ 720 × 100 = 20%
7.A price changes from $440 to $418. Find the percentage decrease.

Answer: 5%

  1. Change = 440 − 418 = 22
  2. 22 ÷ 440 × 100 = 5%
8.A price changes from $180 to $234. Find the percentage increase.

Answer: 30%

  1. Change = 234 − 180 = 54
  2. 54 ÷ 180 × 100 = 30%
9.A price changes from $340 to $425. Find the percentage increase.

Answer: 25%

  1. Change = 425 − 340 = 85
  2. 85 ÷ 340 × 100 = 25%
10.A price changes from $480 to $120. Find the percentage decrease.

Answer: 75%

  1. Change = 480 − 120 = 360
  2. 360 ÷ 480 × 100 = 75%
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