Match the following items. 1. (-4, -2) 7 B 2. (2, -4) 2 C 3. (4, -2) 4 A 4. (2, 5) 2 D 5. (-1, 1) 3 H 6. (-5, 0) 8 G 7. (4, 2) 1 F 8. (0, -5) 6 E

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?