-89.74% is the change from 39 to 4
Calculation steps:
[( 4 - 39 ) ÷ 39] x 100 = -89.74%
Formula
Percentage change = [(4 - 39) / 39] x 100
Subtract the new number by the original number
4 - 39 = -35
-35 ÷ 39 = -0.8974358974358975
-0.8974358974358975 x 100 = -89.74%