-27.69% is the change from 939 to 679
Calculation steps:
[( 679 - 939 ) ÷ 939] x 100 = -27.69%
Formula
Percentage change = [(679 - 939) / 939] x 100
Subtract the new number by the original number
679 - 939 = -260
-260 ÷ 939 = -0.27689030883919064
-0.27689030883919064 x 100 = -27.69%