How are these numbers calculated?

Big Games

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

Week of 4/21100.0*Promoted100.0*Average seed
Stevenage 2 Brentford 1 +4.6
+0.5
Notts County 2 Bury 4 +3.8
+0.2
Sheff Wed 2 Carlisle 1 +0.8
+0.1
Week of 4/28100.0*Promoted100.0*Average seed
Wycombe 3 Notts County 4 -4.2
-0.2
Carlisle 4 Exeter City 1 -0.9
-0.1
Sheff United 2 Stevenage 2 +0.7
+0.1
Brentford 1 Sheff Wed 2 +0.1
Week of 5/5100.0*Promoted100.0*Average seed
Stevenage 3 Bury 0 +8.2
+0.4
Notts County 4 Colchester 1 -3.2
-0.2
Oldham 2 Carlisle 1 +1.7
+0.2
Points
Chance Will Win Championship