-10.83% is the change from 942 to 840
Calculation steps:
[( 840 - 942 ) ÷ 942] x 100 = -10.83%
Formula
Percentage change = [(840 - 942) / 942] x 100
Subtract the new number by the original number
840 - 942 = -102
-102 ÷ 942 = -0.10828025477707007
-0.10828025477707007 x 100 = -10.83%