Determine the percent of the change in the cost of gasoline from 1970 to 2010 round to the nearest whole percent if necessary

Since the 2010 price is greater ($2.95) than the 1970 price ($1.30) this is a percent of increased. 
Step 1: Find the amount of increased.
Step 2: Find the percent of increased.

The cost of gasoline increased by about 127% from 1970 to 2010.

Bis the correct answer