How are these numbers calculated?

Big Games

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

Week of 10/21100.0*Chance wins title100.0*Promoted100.0*Average seed
Oskarshamns AIK 2 Landskrona BoIS 1 -0.3
-0.2
Week of 10/28100.0*Chance wins title100.0*Promoted100.0*Average seed
IK Oddevold 3 Landskrona BoIS 2 -2.6
-1.3
Mjällby 2 Oskarshamns AIK 1 -2.5
-1.3
Week of 11/4100.0*Chance wins title100.0*Promoted100.0*Average seed
Ljungskile SK 2 Mjällby 2 Yes
Yes
+0.1
Points
Chance Will Win Championship