2.2.5 Percent Increase and Decrease

Key Objectives • Find the percent of increase or decrease. • Find results of a percent increase or decrease. • Use equations to find discounts and markups. Key Terms

• The percent increase is a percent change describing an increase in quantity. • The percent decrease is a percent change describing a decrease in quantity. • The percent change is the amount stated as a percent that a number increases or decreases. • A discount is an amount that is subtracted from the regular price of an item. • A markup is an amount by which a wholesale cost is increased. Example 1 Finding Percent Increase or Decrease In Example 1, Prof. Burger uses the percent change equation to find a percent of increase or decrease.

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