-57.84% is the change from 816 to 344
Calculation steps:
[( 344 - 816 ) ÷ 816] x 100 = -57.84%
Formula
Percentage change = [(344 - 816) / 816] x 100
Subtract the new number by the original number
344 - 816 = -472
-472 ÷ 816 = -0.5784313725490197
-0.5784313725490197 x 100 = -57.84%