-45.61% is the change from 809 to 440
Calculation steps:
[( 440 - 809 ) ÷ 809] x 100 = -45.61%
Formula
Percentage change = [(440 - 809) / 809] x 100
Subtract the new number by the original number
440 - 809 = -369
-369 ÷ 809 = -0.4561186650185414
-0.4561186650185414 x 100 = -45.61%