How are these numbers calculated?

Big Games

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

Week of 4/25100.0*Chance wins title100.0*Promoted100.0*Average seed
Darlington 1 Brentford 3 No
Gillingham 0 Bury 0 No
-2.5
Exeter City 2 Morecambe 2 +0.4
+3.3
+0.1
Luton 1 Rochdale 1 +0.1
+0.1
Bradford 3 Rotherham 0 +0.1
Port Vale 1 Wycombe 1 -1.3
-0.0
Week of 5/2100.0*Chance wins title100.0*Promoted100.0*Average seed
Bury 1 Accrington 0 +25.8
+0.4
Rotherham 0 Exeter City 1 -18.7
-0.3
Wycombe 1 Notts County 2 +3.5
+0.1
Points
Chance Will Win Championship