-50.18% is the change from 811 to 404
Calculation steps:
[( 404 - 811 ) ÷ 811] x 100 = -50.18%
Formula
Percentage change = [(404 - 811) / 811] x 100
Subtract the new number by the original number
404 - 811 = -407
-407 ÷ 811 = -0.5018495684340321
-0.5018495684340321 x 100 = -50.18%