How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Chance in playoffs100.0*Average seed
Bolivar 2 LDU 2 +2.9
-0.0
Week of 5/3None
Week of 5/10100.0*Chance in playoffs100.0*Average seed
Santos 6 Bolivar 0 +19.6
+0.2
LDU 1 Danubio 1 -10.5
+0.1
Points
Chance Will Make Playoffs