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# Percentage Increase and Decrease

The following math revision questions are provided in support of the math tutorial on Percentage Increase and Decrease. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Percentage Increase and Decrease tutorials. The Percentage Increase and Decrease calculators are particularly useful for ensuring your stet-by-step calculations are correct as well as ensuring your final result is accurate.

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Percentages Learning Material
Tutorial IDTitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
5.3Percentage Increase and Decrease

## Percentage Increase and Decrease Revision Questions

1. . A boy is 160 cm tall now but three years ago, he was 148 cm tall. What is the percentage increase of his height in the last three years expressed to one decimal place?

1. 7.5%
2. 12.0%
3. 14.8%
4. 16.0%

2. . An item that previously cost \$30 became \$24 after a discount. What is the percentage decrease of the item's price?

1. 6.0%
2. 16.7%
3. 20.0%
4. 24.0%

3. . An employee now earns \$3,200 in a month after a 2% tax cut approved by the government. What was his previous salary before the tax cut?

1. \$3,265.3
2. \$3,240.0
3. \$3,137.2
4. \$3,136.0

4. . The GDP (gross domestic product) per capita (for person) of a country decreased by 3% during 2021 because of the negative impact Covid-19 had on employment. The actual GDP per capita of the given country is \$16,328. What was the GDP per capita in the previous year?

1. \$16,833
2. \$15,838
3. \$16,489
4. \$15,520

5. . The price of an item was \$300 initially. The owner raised the price by 10% but since the item could not be sold, he lowered the price by 10%. What is the actual price of the item?

1. \$330
2. \$300
3. \$297
4. \$270

6. . A mobile phone that previously cost \$460 now costs \$390. What is the percentage decrease of the mobile phone's price?

1. 84.8%
2. 46.0%
3. 39.0%
4. 15.2%

7. . A political party won 36.39% of popular votes in the last election, experiencing a percentage increase of 2.49% compared to previous elections. By what percentage did the given party win in the previous elections?

1. 38.88%
2. 36.39%
3. 34.10%
4. 33.90%

8. . The population of a city is 320,054 inhabitants where 137,427 are of Caucasian origin, 86,248 people are Hispanic and the origin of the rest of the population is unspecified. Which of the following percentage distributions is correct?

1. Caucasian = 26.95%; Hispanic = 62.76%; Other = 10.21%
2. Caucasian = 20.21%; Hispanic = 62.76%; Other = 16.95%
3. Caucasian = 42.94%; Hispanic = 26.95%; Other = 69.89%
4. Caucasian = 42.94%; Hispanic = 26.95%; Other = 30.11%

9. . 78 out of 200 passengers in an airplane speak English, 57 passengers speak French and the rest speak other languages. What is the percentage of distribution of these three categories?

1. English speakers = 34%; French = 28.5%; Other = 65.0%
2. English speakers = 34%; French = 28.5%; Other = 62.5%
3. English speakers = 34%; French = 28.5%; Other = 37.5%
4. English speakers = 78%; French = 14.25%; Other = 37.5%

10. . The price of an item that originally cost \$40 dropped by 25% and then it increased again by 25%. What is the final price of the item?

1. \$42.5
2. \$40.0
3. \$37.5
4. \$35.0

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5. Continuing learning percentages - read our next math tutorial: Applications of Percentage in Banking. Simple and Compound Interest