How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Chance wins title100.0*UEFA CL100.0*Average seed
Rio Ave 0 Benfica 1 No
Sporting CP 1 Belenenses 3 No
-0.4
-0.1
Vitória Guimarães 1 Arouca 0 -0.4
Week of 5/14100.0*Chance wins title100.0*UEFA CL100.0*Average seed
Feirense 2 Sporting CP 1 -2.9
Benfica 5 Vitória Guimarães 0 Yes
Week of 5/21None
Points
Chance Will Win Championship