How are these numbers calculated?

Big Games

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

Week of 10/11100.0*Chance wins title100.0*Average seed
Balestier 1 Tampines 4 -12.8
-0.2
Albirex 2 SAFFC 2 -12.8
-0.2
Home 4 Woodlands 2 +5.2
+0.2
Week of 10/18100.0*Chance wins title100.0*Average seed
Tampines 3 Home 5 +14.0
+0.1
SAFFC 3 Geylang 3 -7.7
-0.1
Woodlands 4 Balestier 1 -0.1
Week of 10/25100.0*Chance wins title100.0*Average seed
Sinchi 2 SAFFC 2 No
-0.4
Woodlands 1 Tampines 2 No
-0.0
Points
Chance Will Win Championship