-51.77% is the change from 819 to 395
Calculation steps:
[( 395 - 819 ) ÷ 819] x 100 = -51.77%
Formula
Percentage change = [(395 - 819) / 819] x 100
Subtract the new number by the original number
395 - 819 = -424
-424 ÷ 819 = -0.5177045177045178
-0.5177045177045178 x 100 = -51.77%