-8.12% is the change from 702 to 645
Calculation steps:
[( 645 - 702 ) ÷ 702] x 100 = -8.12%
Formula
Percentage change = [(645 - 702) / 702] x 100
Subtract the new number by the original number
645 - 702 = -57
-57 ÷ 702 = -0.0811965811965812
-0.0811965811965812 x 100 = -8.12%