How are these numbers calculated?

Big Games

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

Week of 4/21100.0*Chance in playoffs100.0*Average seed
Atromitos 2 Panathinaikos 0 In
+0.0
Panetolikos 1 Aris 2 In
Week of 5/5None
Points
Chance Will Make Playoffs