How are these numbers calculated?

Big Games

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

Week of 3/8100.0*Chance in playoffs100.0*Average seed
Ponte Preta 2 Rio Claro 1 +21.7
+0.2
Sao Bernardo 1 Mogi Mirim 1 +10.2
+0.1
Week of 3/15100.0*Chance in playoffs100.0*Average seed
Bragantino 2 Sao Bernardo 1 In
+0.1
Palmeiras 3 Ponte Preta 2 -3.6
-0.0
Week of 3/23None
Points
Chance Will Make Playoffs