-49.69% is the change from 813 to 409
Calculation steps:
[( 409 - 813 ) ÷ 813] x 100 = -49.69%
Formula
Percentage change = [(409 - 813) / 813] x 100
Subtract the new number by the original number
409 - 813 = -404
-404 ÷ 813 = -0.4969249692496925
-0.4969249692496925 x 100 = -49.69%