-61.7% is the change from 833 to 319
Calculation steps:
[( 319 - 833 ) ÷ 833] x 100 = -61.7%
Formula
Percentage change = [(319 - 833) / 833] x 100
Subtract the new number by the original number
319 - 833 = -514
-514 ÷ 833 = -0.617046818727491
-0.617046818727491 x 100 = -61.7%