-49.69% is the change from 809 to 407
Calculation steps:
[( 407 - 809 ) ÷ 809] x 100 = -49.69%
Formula
Percentage change = [(407 - 809) / 809] x 100
Subtract the new number by the original number
407 - 809 = -402
-402 ÷ 809 = -0.4969097651421508
-0.4969097651421508 x 100 = -49.69%