-91.91% is the change from 680 to 55
Calculation steps:
[( 55 - 680 ) ÷ 680] x 100 = -91.91%
Formula
Percentage change = [(55 - 680) / 680] x 100
Subtract the new number by the original number
55 - 680 = -625
-625 ÷ 680 = -0.9191176470588235
-0.9191176470588235 x 100 = -91.91%