-99.26% is the change from 673 to 5
Calculation steps:
[( 5 - 673 ) ÷ 673] x 100 = -99.26%
Formula
Percentage change = [(5 - 673) / 673] x 100
Subtract the new number by the original number
5 - 673 = -668
-668 ÷ 673 = -0.9925705794947994
-0.9925705794947994 x 100 = -99.26%