How are these numbers calculated?

Big Games

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

Week of 4/10100.0*Chance in playoffs100.0*Average seed
Audax Italiano 2 Necaxa 1 -14.0
-0.4
Week of 4/18100.0*Chance in playoffs100.0*Average seed
Alianza Lima 0 Sao Paulo 1 -3.7
-0.1
Week of 4/24100.0*Chance in playoffs100.0*Average seed
Necaxa 2 Alianza Lima 0 In
+0.3
Sao Paulo 2 Audax Italiano 2 -7.2
+0.4
Points
Chance Will Make Playoffs