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*Average seed
America-RN 1 Criciuma 4 -0.2
Avai 1 Guarani 0 -0.1
America-MG 3 ABC 3 +0.1
Ceara 1 CRB 2 +0.0
Week of 11/17100.0*Average seed
America-RN 1 America-MG 1 +0.0
Week of 11/23100.0*Average seed
ABC 2 America-RN 2 -0.5
America-MG 3 Ipatinga 1 -0.3
Atletico-PR 1 Parana 1 +0.2
Points
Chance Will Win Championship