-1.63% is the change from 857 to 843
Calculation steps:
[( 843 - 857 ) ÷ 857] x 100 = -1.63%
Formula
Percentage change = [(843 - 857) / 857] x 100
Subtract the new number by the original number
843 - 857 = -14
-14 ÷ 857 = -0.01633605600933489
-0.01633605600933489 x 100 = -1.63%