-56.5% is the change from 816 to 355
Calculation steps:
[( 355 - 816 ) ÷ 816] x 100 = -56.5%
Formula
Percentage change = [(355 - 816) / 816] x 100
Subtract the new number by the original number
355 - 816 = -461
-461 ÷ 816 = -0.5649509803921569
-0.5649509803921569 x 100 = -56.5%