-94.21% is the change from 673 to 39
Calculation steps:
[( 39 - 673 ) ÷ 673] x 100 = -94.21%
Formula
Percentage change = [(39 - 673) / 673] x 100
Subtract the new number by the original number
39 - 673 = -634
-634 ÷ 673 = -0.9420505200594353
-0.9420505200594353 x 100 = -94.21%