-0.12% is the change from 843 to 842
Calculation steps:
[( 842 - 843 ) ÷ 843] x 100 = -0.12%
Formula
Percentage change = [(842 - 843) / 843] x 100
Subtract the new number by the original number
842 - 843 = -1
-1 ÷ 843 = -0.0011862396204033216
-0.0011862396204033216 x 100 = -0.12%