Eight Four Suited vs King Two Offsuit

At the flop:
Winning 30.4% of the time
Tied 0% of the time
Losing 69.6% of the time

At the Turn:
Winning 38.52% of the time
Tied 0% of the time
Losing 61.48% of the time

At the River:
Winning 45.27% of the time(15.69% with trips or better)
Tied 0.69% of the time
Losing 54.04% of the time(3.02% with trips or better)