-87.21% is the change from 680 to 87
Calculation steps:
[( 87 - 680 ) ÷ 680] x 100 = -87.21%
Formula
Percentage change = [(87 - 680) / 680] x 100
Subtract the new number by the original number
87 - 680 = -593
-593 ÷ 680 = -0.8720588235294118
-0.8720588235294118 x 100 = -87.21%