The Math Meridian
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Percent increase and decrease

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Learn it Percent change = (new − original) ÷ original × 100. Always divide by the ORIGINAL amount.

Example: A price rises from $\$80$ to $\$92$. What is the percent increase?

  1. Change: $92 - 80 = 12$.
  2. $12 \div 80 = 0.15$.
  3. 15% increase.

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