How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Chance in playoffs100.0*Average seed
Barcelona 3 Borussia Dortmund 1 In
+0.5
Slavia Praha 1 Internazionale 3 -9.3
-0.1
Week of 12/11None
Points
Chance Will Make Playoffs