-2.26% is the change from 842 to 823
Calculation steps:
[( 823 - 842 ) ÷ 842] x 100 = -2.26%
Formula
Percentage change = [(823 - 842) / 842] x 100
Subtract the new number by the original number
823 - 842 = -19
-19 ÷ 842 = -0.022565320665083134
-0.022565320665083134 x 100 = -2.26%