-10.33% is the change from 939 to 842
Calculation steps:
[( 842 - 939 ) ÷ 939] x 100 = -10.33%
Formula
Percentage change = [(842 - 939) / 939] x 100
Subtract the new number by the original number
842 - 939 = -97
-97 ÷ 939 = -0.1033013844515442
-0.1033013844515442 x 100 = -10.33%