percent of change
what is the percent of change in the cost of a pizza 2000 7.50 2015 9.00
what is the percent of change in cost of a burger 2000 5.00 2015 6.50
what is the percent of change in cost of a serving of fries 20002.00 2015 4.50
what is the percent of change in cost of a hot dog 2000 2.50 2015 2.00