How are these numbers calculated?

Big Games

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

Week of 4/30100.0*Chance wins title100.0*Average seed
Inverness CT 3 Celtic 2 -25.2
-0.3
Celtic 4 Dundee Utd 1 +10.8
+0.1
Motherwell 0 Rangers 5 -9.2
-0.1
Week of 5/7100.0*Chance wins title100.0*Average seed
Rangers 2 Dundee Utd 0 -19.4
-0.2
Rangers 4 Hearts 0 -17.0
-0.2
Hearts 0 Celtic 3 +11.5
+0.1
Kilmarnock 0 Celtic 2 +11.1
+0.1
Week of 5/14100.0*Chance wins title100.0*Average seed
Kilmarnock 1 Rangers 5 No
-0.3
Celtic 4 Motherwell 0 +10.4
+0.1
Points
Chance Will Win Championship