-15.6% is the change from 923 to 779
Calculation steps:
[( 779 - 923 ) ÷ 923] x 100 = -15.6%
Formula
Percentage change = [(779 - 923) / 923] x 100
Subtract the new number by the original number
779 - 923 = -144
-144 ÷ 923 = -0.1560130010834236
-0.1560130010834236 x 100 = -15.6%