Find the percent of change. round to the nearest tenth of a percent if necessary. 3/8 to 7/8

Remember (a/b)/(c/d)=(a/b)(d/c)=(ad)/(bc)

percent change=change/original

change=7/8-3/8=4/8=1/2

change/orignal=(1/2)/(3/8)=(1/2)(8/3)=8/6=4/3=1 and 1/3=1.33333
percent means parts out of 100
1.333333/1=13.3333/10=133.333333/100=133.33333%

answer is 133.3% (rounded)

The answer is 76° i believe