-1.68% is the change from 656 to 645
Calculation steps:
[( 645 - 656 ) ÷ 656] x 100 = -1.68%
Formula
Percentage change = [(645 - 656) / 656] x 100
Subtract the new number by the original number
645 - 656 = -11
-11 ÷ 656 = -0.01676829268292683
-0.01676829268292683 x 100 = -1.68%