How are these numbers calculated?

Big Games

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

Week of 3/11100.0*Chance in playoffs100.0*Average seed
Boavista 0 Fluminense 3 -1.6
-0.0
Week of 3/19100.0*Chance in playoffs100.0*Average seed
Bangu 2 Americano 0 +12.3
+0.3
Cabofriense 1 Volta Redonda 1 +12.2
+0.2
Resende 0 Vasco da Gama 2 -1.1
-0.1
Madureira 0 Flamengo 2 -0.3
-0.0
Week of 3/23100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 1 Bangu 2 In
+0.9
Flamengo 3 Fluminense 2 +0.4
Points
Chance Will Make Playoffs