-74.56% is the change from 680 to 173
Calculation steps:
[( 173 - 680 ) ÷ 680] x 100 = -74.56%
Formula
Percentage change = [(173 - 680) / 680] x 100
Subtract the new number by the original number
173 - 680 = -507
-507 ÷ 680 = -0.7455882352941177
-0.7455882352941177 x 100 = -74.56%