-27.9% is the change from 896 to 646
Calculation steps:
[( 646 - 896 ) ÷ 896] x 100 = -27.9%
Formula
Percentage change = [(646 - 896) / 896] x 100
Subtract the new number by the original number
646 - 896 = -250
-250 ÷ 896 = -0.27901785714285715
-0.27901785714285715 x 100 = -27.9%