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
Notts County 2 Bury 4 -4.8
-0.5
Stevenage 2 Brentford 1 -2.2
-0.1
Sheff Wed 2 Carlisle 1 +1.2
+0.2
Week of 4/28100.0*Promoted100.0*Average seed
Wycombe 3 Notts County 4 +4.7
+0.5
Carlisle 4 Exeter City 1 -0.6
-0.3
Sheff United 2 Stevenage 2 -0.5
-0.0
Brentford 1 Sheff Wed 2 +0.1
+0.1
Week of 5/5100.0*Promoted100.0*Average seed
Notts County 4 Colchester 1 +8.8
+0.5
Stevenage 3 Bury 0 -7.4
-0.3
Oldham 2 Carlisle 1 +0.9
+0.2
Points
Chance Will Win Championship