How are these numbers calculated?

Big Games

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

Week of 5/16100.0*Chance in playoffs100.0*Average seed
San Lorenzo 2 Flamengo 1 In
+1.2
Universidad Catolica 2 Atletico-PR 3 -6.3
-0.1
Week of 5/24None
Points
Chance Will Make Playoffs