64.44% is the change from 45 to 74
Calculation steps:
[( 74 - 45 ) ÷ 45] x 100 = 64.44%
Formula
Percentage change = [(74 - 45) / 45] x 100
Subtract the new number by the original number
74 - 45 = 29
29 ÷ 45 = 0.6444444444444445
0.6444444444444445 x 100 = 64.44%