-0.12% is the change from 842 to 841
Calculation steps:
[( 841 - 842 ) ÷ 842] x 100 = -0.12%
Formula
Percentage change = [(841 - 842) / 842] x 100
Subtract the new number by the original number
841 - 842 = -1
-1 ÷ 842 = -0.0011876484560570072
-0.0011876484560570072 x 100 = -0.12%