-4.37% is the change from 686 to 656
Calculation steps:
[( 656 - 686 ) ÷ 686] x 100 = -4.37%
Formula
Percentage change = [(656 - 686) / 686] x 100
Subtract the new number by the original number
656 - 686 = -30
-30 ÷ 686 = -0.043731778425655975
-0.043731778425655975 x 100 = -4.37%