How are these numbers calculated?

Big Games

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

Week of 9/28100.0*Chance in playoffs100.0*Average seed
Betim 1 Duque de Caxias 0 +22.4
+0.8
Guarani 1 Betim 2 +13.7
+0.8
Macaé 2 CRAC 1 -1.4
+0.0
Caxias 2 Vila Nova 1 +1.3
+0.0
Mogi Mirim 1 Madureira 1 -0.2
+0.1
Grêmio Barueri 3 Duque de Caxias 2 +0.1
+0.1
Week of 10/5100.0*Chance in playoffs100.0*Average seed
Madureira 1 Betim 1 -9.3
-0.2
Vila Nova 1 Guarani 0 -8.5
-0.1
Mogi Mirim 1 Macaé 2 +1.7
+0.1
Caxias 1 Grêmio Barueri 1 +0.0
Week of 10/12100.0*Chance in playoffs100.0*Average seed
Betim 2 Mogi Mirim 1 In
+1.3
Macaé 0 Vila Nova 1 -0.2
Guarani 1 CRAC 1 +0.2
Points
Chance Will Make Playoffs