Percentage Change Notes

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Percentage Change

When a quantity increases/decreases we can find the percentage change by using the formula,

difference/original x 100

Example

e.g. Brianna buys a car for £5000. She sells it later for £3500. What is her percentage change?

Working:

5000 - 3500 = 1500

1500/5000 x 100 = 30%

(1500 is the difference and 5000 is the original price)