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*Relegated100.0*Average seed
Exeter City 4 Walsall 2 -1.0
+0.5
Charlton 2 Wycombe 1 -0.3
Leyton Orient 2 Yeovil 2 +0.1
Week of 4/28100.0*Relegated100.0*Average seed
Carlisle 4 Exeter City 1 Yes
-0.5
Hartlepool 2 Leyton Orient 1 -1.6
Walsall 1 Huddersfield 1 +0.9
Wycombe 3 Notts County 4 -0.8
+0.2
Yeovil 3 Chesterfield 2 -0.2
+0.2
Rochdale 1 MK Dons 2 +0.1
Week of 5/5100.0*Relegated100.0*Average seed
Exeter City 2 Sheff United 2 -0.3
Sheff Wed 2 Wycombe 0 +0.2
Chesterfield 2 Brentford 3 +0.1
Leyton Orient 2 Rochdale 1 +0.1
Points
Chance Will Win Championship