62.22% is the change from 45 to 73
Calculation steps:
[( 73 - 45 ) ÷ 45] x 100 = 62.22%
Formula
Percentage change = [(73 - 45) / 45] x 100
Subtract the new number by the original number
73 - 45 = 28
28 ÷ 45 = 0.6222222222222222
0.6222222222222222 x 100 = 62.22%