-30.07% is the change from 981 to 686
Calculation steps:
[( 686 - 981 ) ÷ 981] x 100 = -30.07%
Formula
Percentage change = [(686 - 981) / 981] x 100
Subtract the new number by the original number
686 - 981 = -295
-295 ÷ 981 = -0.3007135575942915
-0.3007135575942915 x 100 = -30.07%