- Percentage increase = finding a new amount after adding a percentage
- Multiplier method = 1 + (percentage ÷ 100)
- New amount = Original amount × Multiplier
- Common examples: pay rises, price increases, population growth, inflation
- Multiplier > 1 always (because we're adding to the original)
This key facts covers Key Facts: Percentage Increase within Percentage Increase for GCSE Mathematics. Revise Percentage Increase in Ratio & Proportion for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 6 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Percentage Increase
What multiplier is used to increase a value by 15%?
Ahmed says: 'To increase a price by 30%, I first find 30% of the price and then add it on. This always takes two steps.' Explain how Ahmed could use the multiplier method to find the answer in ONE step.
Quick recall flashcards
What is the multiplier for a 10% increase?
1.10 (because 1 + 0.10 = 1.10)
What is a percentage increase?
Finding a new amount after adding a percentage to the original amount