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*Chance wins title100.0*Promoted100.0*Average seed
Charlton 2 Wycombe 1 -3.5
MK Dons 1 Sheff United 0 -3.5
-4.6
-0.1
Sheff Wed 2 Carlisle 1 -6.9
-0.1
Week of 4/28100.0*Chance wins title100.0*Promoted100.0*Average seed
Brentford 1 Sheff Wed 2 -19.5
-0.3
Sheff United 2 Stevenage 2 -8.8
-0.1
Week of 5/5100.0*Chance wins title100.0*Promoted100.0*Average seed
Sheff Wed 2 Wycombe 0 -24.9
-0.3
Exeter City 2 Sheff United 2 +1.4
+0.0
Points
Chance Will Win Championship