Eight Three Suited vs King Eight Offsuit

At the flop:
Winning 16.96% of the time
Tied 0% of the time
Losing 83.04% of the time

At the Turn:
Winning 22.5% of the time
Tied 0.97% of the time
Losing 76.53% of the time

At the River:
Winning 27.57% of the time(10.77% with trips or better)
Tied 3.69% of the time
Losing 68.74% of the time(5.5% with trips or better)