How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Relegated100.0*Average seed
Leicester 1 Sheff Wed 3 -33.7
+2.0
West Brom 1 Southampton 1 +4.3
-0.1
Norwich 3 QPR 0 +2.8
-0.2
Barnsley 3 Charlton 0 +1.4
-0.2
Coventry 1 Wolves 1 +1.1
Sheff United 2 Bristol City 1 -0.3
Burnley 3 Cardiff 3 -0.2
Plymouth 3 Blackpool 0 +0.0
Week of 5/4100.0*Relegated100.0*Average seed
Southampton 3 Sheff United 2 +7.2
-0.3
Stoke City 0 Leicester 0 +4.9
-0.1
Sheff Wed 4 Norwich 1 No
+1.6
Charlton 4 Coventry 1 -0.6
+0.2
Blackpool 1 Watford 1 +0.3
+0.2
Cardiff 3 Barnsley 0 +0.2
Points
Chance Will Win Championship