This is a subtraction problem. The word 'removes' strongly shows this. SO you equation is 45.5-8.225. With subtraction you have to line your digits and put zeroes on the first number so it can match/add up.
After your done with subtraction you should get 37.575
15% of 96
= 15% * 96
= (15*96)%
= 1440 %
The answer said as a percent, so we leave the symbol of the %.
Hope this helps.