-38.81% is the change from 809 to 495
Calculation steps:
[( 495 - 809 ) ÷ 809] x 100 = -38.81%
Formula
Percentage change = [(495 - 809) / 809] x 100
Subtract the new number by the original number
495 - 809 = -314
-314 ÷ 809 = -0.38813349814585907
-0.38813349814585907 x 100 = -38.81%