60% is the change from 45 to 72
Calculation steps:
[( 72 - 45 ) ÷ 45] x 100 = 60%
Formula
Percentage change = [(72 - 45) / 45] x 100
Subtract the new number by the original number
72 - 45 = 27
27 ÷ 45 = 0.6
0.6 x 100 = 60%
Example