How are these numbers calculated?

Big Games

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

Week of 2/25100.0*Chance wins title100.0*Relegated100.0*Average seed
Dumbarton 1 Clyde 0 No
+3.0
-0.3
Peterhead 1 Forfar Athletic 1 -0.2
Week of 2/29100.0*Chance wins title100.0*Relegated100.0*Average seed
Clyde 3 Falkirk 2 -5.4
+0.4
Forfar Athletic 0 East Fife 1 -1.1
+0.1
Dumbarton 1 Raith Rovers 0 +0.1
-0.1
Week of 3/7None
Points
Chance Will Win Championship