-9.91% is the change from 898 to 809
Calculation steps:
[( 809 - 898 ) ÷ 898] x 100 = -9.91%
Formula
Percentage change = [(809 - 898) / 898] x 100
Subtract the new number by the original number
809 - 898 = -89
-89 ÷ 898 = -0.09910913140311804
-0.09910913140311804 x 100 = -9.91%