-98.96% is the change from 673 to 7
Calculation steps:
[( 7 - 673 ) ÷ 673] x 100 = -98.96%
Formula
Percentage change = [(7 - 673) / 673] x 100
Subtract the new number by the original number
7 - 673 = -666
-666 ÷ 673 = -0.9895988112927192
-0.9895988112927192 x 100 = -98.96%