7.13% is the change from 645 to 691
Calculation steps:
[( 691 - 645 ) ÷ 645] x 100 = 7.13%
Formula
Percentage change = [(691 - 645) / 645] x 100
Subtract the new number by the original number
691 - 645 = 46
46 ÷ 645 = 0.07131782945736434
0.07131782945736434 x 100 = 7.13%