-81.16% is the change from 207 to 39
Calculation steps:
[( 39 - 207 ) ÷ 207] x 100 = -81.16%
Formula
Percentage change = [(39 - 207) / 207] x 100
Subtract the new number by the original number
39 - 207 = -168
-168 ÷ 207 = -0.8115942028985508
-0.8115942028985508 x 100 = -81.16%