How are these numbers calculated?

Big Games

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

Week of 5/16100.0*Relegated100.0*Average seed
West Brom 0 Liverpool 2 +4.1
-0.4
Newcastle 0 Fulham 1 -2.2
+0.1
Portsmouth 3 Sunderland 1 -1.5
Bolton 1 Hull 1 -0.4
-0.0
Middlesbrough 1 Aston Villa 1 -0.2
+0.0
Week of 5/24100.0*Relegated100.0*Average seed
Blackburn 0 West Brom 0 -0.1
West Ham 2 Middlesbrough 1 +0.1
Points
Chance Will Win Championship