-79.85% is the change from 680 to 137
Calculation steps:
[( 137 - 680 ) ÷ 680] x 100 = -79.85%
Formula
Percentage change = [(137 - 680) / 680] x 100
Subtract the new number by the original number
137 - 680 = -543
-543 ÷ 680 = -0.7985294117647059
-0.7985294117647059 x 100 = -79.85%