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
Charlton 2 Wycombe 1 -8.8
+0.1
Exeter City 4 Walsall 2 -2.5
+0.2
Chesterfield 2 Rochdale 1 +0.5
Leyton Orient 2 Yeovil 2 +0.3
-0.3
Oldham 1 Preston 1 +0.1
Huddersfield 1 Scunthorpe 0 +0.1
Week of 4/28100.0*Relegated100.0*Average seed
Hartlepool 2 Leyton Orient 1 +10.8
-0.6
Wycombe 3 Notts County 4 -5.1
+0.1
Yeovil 3 Chesterfield 2 -2.5
Carlisle 4 Exeter City 1 -0.8
Walsall 1 Huddersfield 1 +0.3
+0.0
Week of 5/5100.0*Relegated100.0*Average seed
MK Dons 0 Walsall 1 -0.3
Leyton Orient 2 Rochdale 1 +0.3
Points
Chance Will Win Championship