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 +7.3
-0.6
Charlton 2 Wycombe 1 -2.7
+0.0
Chesterfield 2 Rochdale 1 +0.6
Leyton Orient 2 Yeovil 2 +0.0
Huddersfield 1 Scunthorpe 0 +0.0
Week of 4/28100.0*Relegated100.0*Average seed
Wycombe 3 Notts County 4 -5.3
+0.1
Yeovil 3 Chesterfield 2 -3.2
+0.0
Walsall 1 Huddersfield 1 -3.0
-0.0
Carlisle 4 Exeter City 1 -0.7
Hartlepool 2 Leyton Orient 1 -0.5
+0.1
Week of 5/5100.0*Relegated100.0*Average seed
MK Dons 0 Walsall 1 +0.5
Leyton Orient 2 Rochdale 1 -0.3
Points
Chance Will Win Championship