-50.12% is the change from 810 to 404
Calculation steps:
[( 404 - 810 ) ÷ 810] x 100 = -50.12%
Formula
Percentage change = [(404 - 810) / 810] x 100
Subtract the new number by the original number
404 - 810 = -406
-406 ÷ 810 = -0.5012345679012346
-0.5012345679012346 x 100 = -50.12%