-91.69% is the change from 686 to 57
Calculation steps:
[( 57 - 686 ) ÷ 686] x 100 = -91.69%
Formula
Percentage change = [(57 - 686) / 686] x 100
Subtract the new number by the original number
57 - 686 = -629
-629 ÷ 686 = -0.9169096209912536
-0.9169096209912536 x 100 = -91.69%