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Notes: Percent of Change

Notes: Percent of Change. Percent of Change – By what percent does an amount increase or decrease?. Proportion Set Up:. change %. =. Original 100. To Solve: -Substitute data given! -Cross Multiply and Divide. To find percent of change:.

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Notes: Percent of Change

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  1. Notes:Percent of Change Percent of Change – By what percent does an amount increase or decrease? Proportion Set Up: change% = Original 100 • To Solve: -Substitute data given! • -Cross Multiply and Divide

  2. To find percent of change: Find the amount of change between the new and original values. Write a percent proportion using the change and original value. Use cross products or scale factors to solve. change % = Original 100

  3. Examples:Percent of Change Find the percent of change in tree height from year 1 to year 10. 1. 4 ft tall 9.6 ft tall change % = Original 100 (Change: 9.6 – 4 = 5.6) Year 1 % 5.6 = 4 100 140% increase Year 10

  4. Examples:Percent of Change Find the percent of change in price of the jeans below. 1. change % Original New - Sale = Original 100 (Change: 75 – 60 = 15) 15 % $75.00 $60.00 = 75 100 20% decrease

  5. Examples:Percent of Change Find the percent of change in the school population using the data below. Round to the nearest whole percent. 1. change % = Original 100 (Change: 990 – 840 = 150) 150 % = 840 100 18% increase

  6. The Biggest Loser Biggest Loser Season 6 – Percent of Change http://viewpure.com/Y1Cb9tRBUXk

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