How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Average seed
Santos 0 Sao Paulo 1 -0.5
Bahia 1 Atletico-PR 2 -0.2
Flamengo 1 Criciuma 1 +0.1
Cruzeiro 2 Goias 1 +0.1
Figueirense 2 Vitoria 0 -0.1
Sport Recife 2 Fluminense 2 +0.0
Week of 11/29100.0*Average seed
Santos 2 Botafogo 0 +0.8
Flamengo 4 Vitoria 0 -0.2
Criciuma 2 Sport Recife 2 +0.1
Atletico-PR 1 Goias 0 -0.1
Sao Paulo 1 Figueirense 1 +0.1
Chapecoense 1 Cruzeiro 1 +0.0
Week of 12/6100.0*Average seed
Vitoria 0 Santos 1 +0.6
Sport Recife 1 Sao Paulo 0 -0.4
Palmeiras 1 Atletico-PR 1 -0.1
Gremio 1 Flamengo 1 +0.0
Points
Chance Will Win Championship