Eight Four Suited vs Ace Six Offsuit

At the flop:
Winning 29.04% of the time
Tied 0% of the time
Losing 70.96% of the time

At the Turn:
Winning 36.28% of the time
Tied 0% of the time
Losing 63.72% of the time

At the River:
Winning 41.93% of the time(15.92% with trips or better)
Tied 0.32% of the time
Losing 57.75% of the time(2.28% with trips or better)