context: With Young at the helm, the 49ers led the league in total points scored (505) and helped them earn a league best 13-3 regular season record. Pro Bowl running back Ricky Watters was the teams leading rusher with 877 yards and 6 touchdowns, while also recording 66 receptions for 719 yards and 5 touchdowns. Rookie fullback William Floyd (American football) was the teams second-leading rusher with 305 yards and 6 touchdowns, while also having 19 receptions for 145 yards. The teams leading receiver was Pro Bowl wide receiver Jerry Rice, who had 112 catches for 1,499 yards and 13 touchdowns, while also gaining 93 yards and two more touchdowns rushing the ball. Receiver John Taylor (American football) was also a reliable target, catching 41 passes for 531 yards and 5 touchdowns. Pro Bowl tight end Brent Jones added 49 receptions for 670 yards and 9 touchdowns. The offensive line was led by Pro Bowl center Bart Oates, another offseason free agent pickup, and Pro Bowl guard Jesse Sapolu.
question: How many more rusing yards did Watters have compared to Floyd?
answer: 572