How are these numbers calculated?

Big Games

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

Week of 4/24100.0*Promoted100.0*Average seed
Exeter City 1 Charlton 1 -2.2
-0.2
Millwall 2 Leyton Orient 1 -1.4
-0.1
Leeds 4 Milton Keynes 1 -0.5
-0.1
Wycombe 2 Swindon 2 +0.4
+0.1
Stockport 0 Huddersfield 6 -0.1
Week of 5/1100.0*Promoted100.0*Average seed
Tranmere 2 Millwall 0 +1.3
Charlton 1 Leeds 0 +0.5
+0.5
Swindon 3 Brentford 2 -0.2
-0.2
Huddersfield 2 Colchester 1 -0.2
Week of 5/8100.0*Promoted100.0*Average seed
Oldham 0 Charlton 2 +4.1
+1.0
Millwall 3 Swindon 2 -3.2
Leeds 2 Bristol Rovers 1 -3.2
-0.2
Exeter City 2 Huddersfield 1 +0.2
Points
Chance Will Win Championship