-71.55% is the change from 819 to 233
Calculation steps:
[( 233 - 819 ) ÷ 819] x 100 = -71.55%
Formula
Percentage change = [(233 - 819) / 819] x 100
Subtract the new number by the original number
233 - 819 = -586
-586 ÷ 819 = -0.7155067155067155
-0.7155067155067155 x 100 = -71.55%