-76.32% is the change from 680 to 161
Calculation steps:
[( 161 - 680 ) ÷ 680] x 100 = -76.32%
Formula
Percentage change = [(161 - 680) / 680] x 100
Subtract the new number by the original number
161 - 680 = -519
-519 ÷ 680 = -0.763235294117647
-0.763235294117647 x 100 = -76.32%