-91.84% is the change from 686 to 56
Calculation steps:
[( 56 - 686 ) ÷ 686] x 100 = -91.84%
Formula
Percentage change = [(56 - 686) / 686] x 100
Subtract the new number by the original number
56 - 686 = -630
-630 ÷ 686 = -0.9183673469387755
-0.9183673469387755 x 100 = -91.84%