-91.82% is the change from 685 to 56
Calculation steps:
[( 56 - 685 ) ÷ 685] x 100 = -91.82%
Formula
Percentage change = [(56 - 685) / 685] x 100
Subtract the new number by the original number
56 - 685 = -629
-629 ÷ 685 = -0.9182481751824818
-0.9182481751824818 x 100 = -91.82%