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*Relegated100.0*Average seed
Bournemouth 2 Grimsby 1 No
+0.8
Aldershot 2 Chester 2 -4.0
+0.0
Macclesfield 2 Barnet 1 -0.1
Notts County 0 Dag & Red 3 +0.1
Week of 5/2100.0*Relegated100.0*Average seed
Morecambe 0 Bournemouth 4 +0.9
Wycombe 1 Notts County 2 -0.3
Barnet 1 Port Vale 2 -0.2
Grimsby 0 Macclesfield 0 -0.1
Points
Chance Will Win Championship