-11.82% is the change from 939 to 828
Calculation steps:
[( 828 - 939 ) ÷ 939] x 100 = -11.82%
Formula
Percentage change = [(828 - 939) / 939] x 100
Subtract the new number by the original number
828 - 939 = -111
-111 ÷ 939 = -0.1182108626198083
-0.1182108626198083 x 100 = -11.82%