How are these numbers calculated?

Big Games

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

Week of 4/17100.0*Promoted100.0*Average seed
Leicester 4 Watford 1 +1.1
+0.2
Blackpool 3 Nottm Forest 1 -0.8
-0.1
Swansea City 3 Barnsley 1 -0.4
-0.1
West Brom 2 Middlesbrough 0 +0.2
+0.0
QPR 0 Cardiff 1 -0.1
Week of 4/24100.0*Promoted100.0*Average seed
Peterborough 0 Blackpool 1 -0.8
-0.1
Preston 0 Leicester 1 +0.7
+0.3
Sheff United 2 Swansea City 0 +0.4
+0.1
Cardiff 3 Sheff Wed 2 -0.1
Nottm Forest 3 Plymouth 0 -0.0
Week of 5/2None
Points
Chance Will Win Championship