12.56% is the change from 645 to 726
Calculation steps:
[( 726 - 645 ) ÷ 645] x 100 = 12.56%
Formula
Percentage change = [(726 - 645) / 645] x 100
Subtract the new number by the original number
726 - 645 = 81
81 ÷ 645 = 0.12558139534883722
0.12558139534883722 x 100 = 12.56%