Answer:
Increase of 20%
Step-by-step explanation:
change = new-old/old = 54 - 45/45 = 9/45 = 0.20
Because this is a positive number this was a percent increase.
%change = |change| * 100 = % = |0.20| * 100 = % = 20%
Therefore your answer is an increase of 20%
Hope this helps,
