How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/7100.0*Championship100.0*Average seed
Sunderland 3 Chelsea 2 -26.5
+0.5
Sunderland 3 Everton 0 -16.9
+0.3
Aston Villa 0 Newcastle United 0 -9.1
+0.1
Norwich City 0 Manchester United 1 -5.2
+0.1
Norwich City 4 Watford 2 +3.1
-0.1
Tottenham Hotspur 1 Southampton 2 +0.1
Crystal Palace 2 Stoke City 1 -0.0
Week of 5/15None
Points
Chance Will Win Championship