You have a $50 gift card to go shopping for school supplies. You buy 2 packs of pencils, 5 notebooks, 6 folders, 1 pack of pens, 3 packs of paper, 1 pack of highlighters, and 2 binders.

A picture, titled Back- to-School Savings, shows the price template for stationary items. The cost of each stationary item is as follows. Packs of pens, 1.57 dollars; pencils packs, 1.98 dollars; folder, 0.75 dollars, packs of highlighters, 3.45 dollars; packs of paper, 0.89 dollars; notebooks, 2.95 dollars; binders, 3.55 dollars.

Question 1
a. What number represents the change in the value of the gift card after buying your school supplies?
change in value:
Question 2
b. What percentage of the value remains on your gift card?
remaining value:
%