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
Juventude 3 Palmeiras 2 +4.1
-0.9
Fortaleza 1 Ponte Preta 0 -2.4
+0.1
Sao Caetano 0 Vasco da Gama 1 -0.3
Corinthians 1 Fluminense 1 +0.2
+0.0
Sao Paulo 1 Atletico-PR 1 -0.0
Week of 11/26100.0*Serie B100.0*Average seed
Goias 3 Ponte Preta 0 No
Palmeiras 1 Internacional 4 +1.6
-0.3
Santa Cruz 1 Fluminense 2 +0.5
-0.1
Week of 12/2100.0*Serie B100.0*Average seed
Fluminense 1 Palmeiras 1 -0.4
Points
Chance Will Win Championship