Eight Four Suited vs King Six Offsuit

At the flop:
Winning 28.32% of the time
Tied 0% of the time
Losing 71.68% of the time

At the Turn:
Winning 35.3% of the time
Tied 0% of the time
Losing 64.7% of the time

At the River:
Winning 40.66% of the time(15.56% with trips or better)
Tied 0.63% of the time
Losing 58.71% of the time(3.04% with trips or better)