How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Relegated100.0*Average seed
Dunfermline 5 Dundee 0 +16.8
-0.4
Inverness CT 0 Livingston 1 +1.9
-0.2
Dundee Utd 1 Kilmarnock 1 -0.2
+0.1
Week of 5/14100.0*Relegated100.0*Average seed
Dundee Utd 0 Dunfermline 1 +31.3
-0.3
Dundee 1 Inverness CT 1 +2.3
-0.1
Kilmarnock 2 Livingston 0 -0.4
+0.1
Week of 5/21100.0*Relegated100.0*Average seed
Livingston 1 Dundee 1 +21.0
-0.5
Inverness CT 0 Dundee Utd 1 +0.1
-0.2
Kilmarnock 4 Dunfermline 0 +0.1
Points
Chance Will Win Championship