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Percent of change

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Learn it Percent change = change ÷ original × 100. Successive changes multiply: a 20% rise then a 20% fall is ×1.2 × 0.8 = ×0.96, a 4% fall overall.

Example: A price rises from $\$80$ to $\$92$.

  1. Change = 92 − 80 = 12.
  2. $12 \div 80 = 0.15$.
  3. That is a 15% increase.

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