# Percent of Change

Your car decreases in value from $20,000 to$17,000. What percent of the value have you lost? Pupils answer word problems by determining the percent of change.

##### Instructional Ideas

• Use the sixth example as a challenge exercise for those that are ready
• Before introducing the formula, allow pupils to develop their own strategies for answering the question
##### Classroom Considerations

• The vocabulary in the lesson may be confusing to some; spend time explaining and giving examples when needed
• The eighth lesson in a series that follows a review of percents
##### Pros

• Includes application with real-life scenarios
• Contains a practice problem set
##### Cons

• Begins with a formula to calculate the percent change; learners don't have an opportunity to understand the meaning of the term/concept