-45.74% is the change from 809 to 439
Calculation steps:
[( 439 - 809 ) ÷ 809] x 100 = -45.74%
Formula
Percentage change = [(439 - 809) / 809] x 100
Subtract the new number by the original number
439 - 809 = -370
-370 ÷ 809 = -0.4573547589616811
-0.4573547589616811 x 100 = -45.74%