-65.45% is the change from 819 to 283
Calculation steps:
[( 283 - 819 ) ÷ 819] x 100 = -65.45%
Formula
Percentage change = [(283 - 819) / 819] x 100
Subtract the new number by the original number
283 - 819 = -536
-536 ÷ 819 = -0.6544566544566545
-0.6544566544566545 x 100 = -65.45%