Eight Four Suited vs Ace Seven Suited

At the flop:
Winning 27.58% of the time
Tied 0% of the time
Losing 72.42% of the time

At the Turn:
Winning 34.27% of the time
Tied 0% of the time
Losing 65.73% of the time

At the River:
Winning 38.43% of the time(15.19% with trips or better)
Tied 0.45% of the time
Losing 61.12% of the time(2.76% with trips or better)