-20.83% is the change from 864 to 684
Calculation steps:
[( 684 - 864 ) ÷ 864] x 100 = -20.83%
Formula
Percentage change = [(684 - 864) / 864] x 100
Subtract the new number by the original number
684 - 864 = -180
-180 ÷ 864 = -0.20833333333333334
-0.20833333333333334 x 100 = -20.83%