Percentage Increase Decrease Practice

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📊 Part 1: Calculating Percentage Changes

Remember: Percentage Increase = ((New Value - Original Value) ÷ Original Value) × 100%
Percentage Decrease = ((Original Value - New Value) ÷ Original Value) × 100%

1. A laptop originally costs $1200. The price increases to $1380. Calculate the percentage increase.

2. A jacket was priced at $250 but is now on sale for $200. Calculate the percentage decrease.

3. The population of a town grew from 8500 to 9350 in one year. What was the percentage increase?

4. A car's value depreciated from $35,000 to $28,000 after one year. Calculate the percentage decrease.

💰 Part 2: Financial Applications

5. Sarah's salary increased from $65,000 to $71,500 per year. What percentage pay rise did she receive?

6. A store advertises "30% off all items". If a television originally costs $800, what is the sale price?

7. A retailer buys goods for $40 and sells them for $58. What is the percentage markup on the cost price?

8. House prices in a suburb decreased by 12% over six months. If a house was originally valued at $450,000, what is its new value?

9. Two stores are having sales:

Store A: $120 shoes reduced to $84
Store B: $150 shoes reduced to $105

Which store offers the better percentage discount? Show your calculations.

🤔 Part 3: Analysis and Explanation

10. A company's profits increased by 25% from $80,000 to $______. Calculate the missing value and explain what this increase means for the business.

11. The price of petrol increased from $1.40 per litre to $1.54 per litre. Calculate the percentage increase and explain how this might affect consumers.

12. A student's test score improved from 65% to 78%. Is this a 13% increase? Explain your reasoning with calculations.