-98.81% is the change from 673 to 8
Calculation steps:
[( 8 - 673 ) ÷ 673] x 100 = -98.81%
Formula
Percentage change = [(8 - 673) / 673] x 100
Subtract the new number by the original number
8 - 673 = -665
-665 ÷ 673 = -0.9881129271916791
-0.9881129271916791 x 100 = -98.81%