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*Promoted100.0*Average seed
Shrewsbury 0 Lincoln City 0 -1.7
-0.2
Darlington 1 Brentford 3 +1.1
+0.1
Gillingham 0 Bury 0 -0.4
Notts County 0 Dag & Red 3 -0.4
-0.1
Accrington 1 Chesterfield 0 +0.2
Week of 5/2100.0*Promoted100.0*Average seed
Dag & Red 1 Shrewsbury 2 +5.7
+1.1
Chester 1 Darlington 2 No
-0.1
Chesterfield 0 Bradford 2 -0.4
Points
Chance Will Win Championship