-51.54% is the change from 811 to 393
Calculation steps:
[( 393 - 811 ) ÷ 811] x 100 = -51.54%
Formula
Percentage change = [(393 - 811) / 811] x 100
Subtract the new number by the original number
393 - 811 = -418
-418 ÷ 811 = -0.5154130702836005
-0.5154130702836005 x 100 = -51.54%