-86.91% is the change from 680 to 89
Calculation steps:
[( 89 - 680 ) ÷ 680] x 100 = -86.91%
Formula
Percentage change = [(89 - 680) / 680] x 100
Subtract the new number by the original number
89 - 680 = -591
-591 ÷ 680 = -0.8691176470588236
-0.8691176470588236 x 100 = -86.91%