-99.55% is the change from 673 to 3
Calculation steps:
[( 3 - 673 ) ÷ 673] x 100 = -99.55%
Formula
Percentage change = [(3 - 673) / 673] x 100
Subtract the new number by the original number
3 - 673 = -670
-670 ÷ 673 = -0.9955423476968797
-0.9955423476968797 x 100 = -99.55%