-49.44% is the change from 809 to 409
Calculation steps:
[( 409 - 809 ) ÷ 809] x 100 = -49.44%
Formula
Percentage change = [(409 - 809) / 809] x 100
Subtract the new number by the original number
409 - 809 = -400
-400 ÷ 809 = -0.49443757725587145
-0.49443757725587145 x 100 = -49.44%