-56.23% is the change from 811 to 355
Calculation steps:
[( 355 - 811 ) ÷ 811] x 100 = -56.23%
Formula
Percentage change = [(355 - 811) / 811] x 100
Subtract the new number by the original number
355 - 811 = -456
-456 ÷ 811 = -0.562268803945746
-0.562268803945746 x 100 = -56.23%