How are these numbers calculated?

Big Games

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

Week of 4/3None
Week of 4/10100.0*Chance in playoffs100.0*Average seed
Deportivo Quito 2 Defensor Sporting 0 +29.2
+0.6
Guadalajara 0 Velez Sarsfield 2 +9.4
Week of 4/17100.0*Chance in playoffs100.0*Average seed
Deportivo Quito 5 Guadalajara 0 In
+0.5
Velez Sarsfield 1 Defensor Sporting 3 -20.2
-0.3
Points
Chance Will Make Playoffs