-81.69% is the change from 213 to 39
Calculation steps:
[( 39 - 213 ) ÷ 213] x 100 = -81.69%
Formula
Percentage change = [(39 - 213) / 213] x 100
Subtract the new number by the original number
39 - 213 = -174
-174 ÷ 213 = -0.8169014084507042
-0.8169014084507042 x 100 = -81.69%
Example