-0.94% is the change from 851 to 843
Calculation steps:
[( 843 - 851 ) ÷ 851] x 100 = -0.94%
Formula
Percentage change = [(843 - 851) / 851] x 100
Subtract the new number by the original number
843 - 851 = -8
-8 ÷ 851 = -0.009400705052878966
-0.009400705052878966 x 100 = -0.94%