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
Northampton 0 Milton Keynes 1 +13.7
-1.0
Northampton 2 Hereford 1 -12.9
+0.7
Swindon 2 Bristol Rovers 1 +0.9
-0.2
Huddersfield 2 Brighton 2 +0.8
+0.0
Cheltenham 1 Carlisle 1 -0.6
+0.0
Hartlepool 0 Leeds 1 -0.4
+0.2
Milton Keynes 0 Walsall 1 -0.2
Millwall 2 Leyton Orient 1 -0.2
Colchester 0 Peterborough 1 -0.2
Oldham 1 Southend 1 -0.1
Tranmere 1 Yeovil 1 +0.1
-0.1
Week of 5/2100.0*Relegated100.0*Average seed
Carlisle 2 Millwall 0 +24.4
-0.4
Leeds 3 Northampton 0 +10.8
-0.8
Brighton 1 Stockport 0 +7.7
-0.3
Bristol Rovers 4 Hartlepool 1 +0.1
Yeovil 0 Colchester 2 +0.1
Peterborough 2 Swindon 2 -0.1
Points
Chance Will Win Championship