-51.59% is the change from 816 to 395
Calculation steps:
[( 395 - 816 ) ÷ 816] x 100 = -51.59%
Formula
Percentage change = [(395 - 816) / 816] x 100
Subtract the new number by the original number
395 - 816 = -421
-421 ÷ 816 = -0.5159313725490197
-0.5159313725490197 x 100 = -51.59%