-23.26% is the change from 864 to 663
Calculation steps:
[( 663 - 864 ) ÷ 864] x 100 = -23.26%
Formula
Percentage change = [(663 - 864) / 864] x 100
Subtract the new number by the original number
663 - 864 = -201
-201 ÷ 864 = -0.2326388888888889
-0.2326388888888889 x 100 = -23.26%