-0.35% is the change from 857 to 854
Calculation steps:
[( 854 - 857 ) ÷ 857] x 100 = -0.35%
Formula
Percentage change = [(854 - 857) / 857] x 100
Subtract the new number by the original number
854 - 857 = -3
-3 ÷ 857 = -0.003500583430571762
-0.003500583430571762 x 100 = -0.35%