-62.76% is the change from 819 to 305
Calculation steps:
[( 305 - 819 ) ÷ 819] x 100 = -62.76%
Formula
Percentage change = [(305 - 819) / 819] x 100
Subtract the new number by the original number
305 - 819 = -514
-514 ÷ 819 = -0.6275946275946276
-0.6275946275946276 x 100 = -62.76%