-81.52% is the change from 211 to 39
Calculation steps:
[( 39 - 211 ) ÷ 211] x 100 = -81.52%
Formula
Percentage change = [(39 - 211) / 211] x 100
Subtract the new number by the original number
39 - 211 = -172
-172 ÷ 211 = -0.8151658767772512
-0.8151658767772512 x 100 = -81.52%