How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Average seed
Vitoria 4 Gremio 2 +1.0
Sport Recife 3 Atletico-MG 0 -0.1
Week of 11/30100.0*Average seed
Botafogo 1 Figueirense 3 +0.2
Vitoria 0 Palmeiras 0 -0.2
Internacional 1 Cruzeiro 0 -0.1
Atletico-MG 0 Santos 0 +0.1
Portuguesa 2 Sport Recife 2 +0.1
Flamengo 3 Goias 3 -0.0
Week of 12/7100.0*Average seed
Vasco da Gama 0 Vitoria 2 +0.8
Palmeiras 0 Botafogo 1 -0.3
Sport Recife 4 Coritiba 3 -0.3
Gremio 2 Atletico-MG 0 +0.1
Points
Chance Will Win Championship