-17.04% is the change from 939 to 779
Calculation steps:
[( 779 - 939 ) ÷ 939] x 100 = -17.04%
Formula
Percentage change = [(779 - 939) / 939] x 100
Subtract the new number by the original number
779 - 939 = -160
-160 ÷ 939 = -0.1703940362087327
-0.1703940362087327 x 100 = -17.04%