How are these numbers calculated?

Big Games

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

Week of 11/9100.0*Serie C100.0*Average seed
Juventude 0 Ponte Preta 1 Yes
-0.4
Boa Esporte 0 Brasil de Pelotas 1 +0.2
+0.0
Sampaio Correa 2 Sao Bento 1 -0.2
Guarani 0 Paysandu 2 -0.1
Week of 11/16100.0*Serie C100.0*Average seed
Sampaio Correa 1 Boa Esporte 0 -0.1
Week of 11/23None
Points
Chance Will Win Championship