-3.93% is the change from 839 to 806
Calculation steps:
[( 806 - 839 ) ÷ 839] x 100 = -3.93%
Formula
Percentage change = [(806 - 839) / 839] x 100
Subtract the new number by the original number
806 - 839 = -33
-33 ÷ 839 = -0.03933253873659118
-0.03933253873659118 x 100 = -3.93%