-94.95% is the change from 673 to 34
Calculation steps:
[( 34 - 673 ) ÷ 673] x 100 = -94.95%
Formula
Percentage change = [(34 - 673) / 673] x 100
Subtract the new number by the original number
34 - 673 = -639
-639 ÷ 673 = -0.9494799405646359
-0.9494799405646359 x 100 = -94.95%