How are these numbers calculated?

Big Games

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

Week of 3/6100.0*Chance wins title100.0*Average seed
MAN 2 FIF 8 +29.6
+0.3
BRA 8 MAN 3 -10.3
-0.1
DUN 1 BRA 2 -7.5
Week of 3/13100.0*Chance wins title100.0*Average seed
MAN 3 BRA 6 -37.2
-0.4
BRA 8 EDI 1 -7.3
-0.1
Week of 3/20100.0*Chance wins title100.0*Average seed
EDI 3 BRA 6 No
-0.1
Points
Chance Will Win Championship