97.78% is the change from 45 to 89
Calculation steps:
[( 89 - 45 ) ÷ 45] x 100 = 97.78%
Formula
Percentage change = [(89 - 45) / 45] x 100
Subtract the new number by the original number
89 - 45 = 44
44 ÷ 45 = 0.9777777777777777
0.9777777777777777 x 100 = 97.78%