-9.1% is the change from 890 to 809
Calculation steps:
[( 809 - 890 ) ÷ 890] x 100 = -9.1%
Formula
Percentage change = [(809 - 890) / 890] x 100
Subtract the new number by the original number
809 - 890 = -81
-81 ÷ 890 = -0.09101123595505618
-0.09101123595505618 x 100 = -9.1%