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*UEFA CL100.0*Average seed
West Ham 3 Manchester United 2 -20.3
-0.5
Norwich City 0 Manchester United 1 +16.1
+0.5
Manchester City 2 Arsenal 2 +2.6
+0.0
West Ham 1 Swansea City 4 +0.7
+0.1
Liverpool 2 Watford 0 -0.1
Liverpool 1 Chelsea 1 +0.0
Week of 5/15100.0*UEFA CL100.0*Average seed
Manchester United 3 Bournemouth 1 +22.9
+0.7
Swansea City 1 Manchester City 1 -12.6
-0.1
Stoke City 2 West Ham 1 +0.3
Southampton 4 Crystal Palace 1 -0.2
Points
Chance Will Win Championship