-28.54% is the change from 904 to 646
Calculation steps:
[( 646 - 904 ) ÷ 904] x 100 = -28.54%
Formula
Percentage change = [(646 - 904) / 904] x 100
Subtract the new number by the original number
646 - 904 = -258
-258 ÷ 904 = -0.2853982300884956
-0.2853982300884956 x 100 = -28.54%