How to solve this word problem?

Skeeter, the dog, weighs exactly 36.5 pounds. When weighed on a defective scale, he weighed 38 pounds. (a) What is the percent of error in measurement of the defective scale to the nearest tenth? (b) If Millie, the cat, weighs 14 pounds on the same defective scale, what is Millie's actual weight to the nearest tenth of a pound