-98.82% is the change from 679 to 8
Calculation steps:
[( 8 - 679 ) ÷ 679] x 100 = -98.82%
Formula
Percentage change = [(8 - 679) / 679] x 100
Subtract the new number by the original number
8 - 679 = -671
-671 ÷ 679 = -0.9882179675994109
-0.9882179675994109 x 100 = -98.82%