How are these numbers calculated?

Big Games

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

Week of 4/8100.0*Chance in playoffs100.0*Average seed
Pumas UNAM 3 Penarol 1 +63.1
+1.1
Bolivar 1 Gremio 0 -12.2
-0.4
Week of 4/15None
Week of 4/25None
Points
Chance Will Make Playoffs