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
Fortaleza 2 Santos 1 -0.2
Fluminense 1 Palmeiras 0 +0.2
Palmeiras 1 Gremio 2 +0.2
Week of 12/1100.0*Average seed
Palmeiras 5 Goias 1 -0.2
Athletico-PR 1 Santos 0 -0.2
Palmeiras 1 Flamengo 3 +0.1
Santos 2 Chapecoense 0 +0.1
Week of 12/8100.0*Average seed
Santos 4 Flamengo 0 +0.5
Cruzeiro 0 Palmeiras 2 -0.2
Points
Chance Will Win Championship