A car dealership bought a car for $10,000 and sold the car for $12,000 What was the percent change? *

20%

Explanation:

Minus the initial price off the the retail price to find the difference.
12,000 - 10,000 = 2,000

Take the initial price and difference and compare:
10,000 and 2,000

2,000 is 20% of 10,000 because it is 1/5 of 10,000

Main idea on left, details on right