How are these numbers calculated?

Big Games

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

Week of 5/15100.0*Chance in playoffs100.0*Average seed
Monagas 1 Gremio 2 In
+0.4
Defensor Sporting 0 Cerro Porteno 1 +4.1
-0.1
Week of 5/22100.0*Chance in playoffs100.0*Average seed
Cerro Porteno 3 Monagas 2 -0.4
Gremio 1 Defensor Sporting 0 +0.2
Points
Chance Will Make Playoffs