How are these numbers calculated?

Big Games

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

Week of 4/22100.0*Chance wins title100.0*Promoted100.0*Average seed
Forfar Athletic 3 Clyde 0 -15.8
-11.8
-0.2
Cowdenbeath 1 Arbroath 2 +12.9
+9.7
+0.1
Week of 4/29100.0*Chance wins title100.0*Promoted100.0*Average seed
Arbroath 3 Elgin City 2 +20.3
+15.2
+0.2
Cowdenbeath 1 Forfar Athletic 1 +12.7
+9.5
+0.1
Week of 5/6100.0*Chance wins title100.0*Promoted100.0*Average seed
Forfar Athletic 2 Annan Athletic 4 Yes
Yes
+0.2
Stirling Albion 1 Arbroath 1 -22.8
-17.1
-0.2
Points
Chance Will Win Championship