Final answer:
To find the percent of price decrease from $86.50 to $69.20, calculate the difference between the original and sale price, and divide it by the original price multiplied by 100. The percent of price decrease is 20%.
Step-by-step explanation:
To find the percent of price decrease from $86.50 to $69.20, you need to calculate the difference between the original price and the sale price, and then divide it by the original price and multiply by 100.
The difference between $86.50 and $69.20 is $86.50 - $69.20 = $17.30.
The percent of price decrease is ($17.30 / $86.50) * 100 = 20%.