122.22% is the change from 45 to 100
Calculation steps:
[( 100 - 45 ) ÷ 45] x 100 = 122.22%
Formula
Percentage change = [(100 - 45) / 45] x 100
Subtract the new number by the original number
100 - 45 = 55
55 ÷ 45 = 1.2222222222222223
1.2222222222222223 x 100 = 122.22%