How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Average seed
Internacional 2 Palmeiras 1 +1.2
Flamengo 2 Atletico-PR 0 +0.2
Sport Recife 1 Cruzeiro 0 -0.2
Atletico-MG 4 Goias 1 -0.1
Figueirense 2 Nautico 0 -0.1
Corinthians 0 Vasco da Gama 1 -0.1
Fluminense 3 Juventude 2 -0.1
America-RN 0 Gremio 3 -0.0
Sao Paulo 2 Botafogo 2 +0.0
Week of 12/2100.0*Average seed
Goias 2 Internacional 1 -1.2
Palmeiras 1 Atletico-MG 3 -0.4
Vasco da Gama 3 Parana 0 -0.2
Botafogo 1 Figueirense 1 +0.1
Juventude 2 Sport Recife 1 +0.1
Points
Chance Will Win Championship