How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Serie B100.0*Average seed
Sao Caetano 0 Vasco da Gama 1 +7.9
-0.3
Fortaleza 1 Ponte Preta 0 -2.2
+0.1
Corinthians 1 Fluminense 1 -0.9
Week of 11/26100.0*Serie B100.0*Average seed
Santa Cruz 1 Fluminense 2 Yes
Sao Caetano 0 Parana 2 Yes
-0.4
Goias 3 Ponte Preta 0 -0.6
+0.1
Juventude 2 Fortaleza 2 +0.1
Week of 12/2100.0*Serie B100.0*Average seed
Fortaleza 1 Gremio 0 -0.6
Flamengo 4 Sao Caetano 1 -0.4
Points
Chance Will Win Championship