-27.16% is the change from 939 to 684
Calculation steps:
[( 684 - 939 ) ÷ 939] x 100 = -27.16%
Formula
Percentage change = [(684 - 939) / 939] x 100
Subtract the new number by the original number
684 - 939 = -255
-255 ÷ 939 = -0.2715654952076677
-0.2715654952076677 x 100 = -27.16%