-18.69% is the change from 685 to 557
Calculation steps:
[( 557 - 685 ) ÷ 685] x 100 = -18.69%
Formula
Percentage change = [(557 - 685) / 685] x 100
Subtract the new number by the original number
557 - 685 = -128
-128 ÷ 685 = -0.18686131386861313
-0.18686131386861313 x 100 = -18.69%