How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Relegated100.0*Average seed
Macclesfield 1 Chesterfield 0 No
+1.0
Mansfield 0 Rotherham 1 No
+0.1
Darlington 2 Dag & Red 3 +0.5
-0.1
Notts County 1 Wycombe 0 +0.3
-0.2
Wrexham 1 Accrington 3 -0.2
Chester 0 Stockport 0 +0.1
Week of 5/3100.0*Relegated100.0*Average seed
Chesterfield 1 Notts County 1 +0.2
Accrington 0 Bury 2 +0.1
Chester 0 Macclesfield 0 +0.1
Rochdale 1 Shrewsbury 1 +0.0
Points
Chance Will Win Championship