Answer:
Increase by 100%
Step-by-step explanation:
To find the percent increase/decrease:
Follow these steps below. Notice the fractions 1/2 and 1/4 have been converted to decimals to more easily work with them. Remember 1/2 = 0.5 and 1/4 = 0.25.
1/2 - 1/4 = 0.5 - 0.25 = 0.25
0.25/0.25 = 1
1*100 = 100%