-56.55% is the change from 817 to 355
Calculation steps:
[( 355 - 817 ) ÷ 817] x 100 = -56.55%
Formula
Percentage change = [(355 - 817) / 817] x 100
Subtract the new number by the original number
355 - 817 = -462
-462 ÷ 817 = -0.565483476132191
-0.565483476132191 x 100 = -56.55%