-0.29% is the change from 682 to 680
Calculation steps:
[( 680 - 682 ) ÷ 682] x 100 = -0.29%
Formula
Percentage change = [(680 - 682) / 682] x 100
Subtract the new number by the original number
680 - 682 = -2
-2 ÷ 682 = -0.002932551319648094
-0.002932551319648094 x 100 = -0.29%