-5.95% is the change from 857 to 806
Calculation steps:
[( 806 - 857 ) ÷ 857] x 100 = -5.95%
Formula
Percentage change = [(806 - 857) / 857] x 100
Subtract the new number by the original number
806 - 857 = -51
-51 ÷ 857 = -0.059509918319719954
-0.059509918319719954 x 100 = -5.95%