How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Serie B100.0*Average seed
Vitória 4 Figueirense 0 +16.8
-0.2
Corinthians 1 Internacional 0 +15.3
-0.3
Flamengo 2 Coritiba 2 +0.3
Atlético-PR 2 Sport Recife 0 -0.3
Cruzeiro 2 Santos 2 +0.1
Week of 11/26100.0*Serie B100.0*Average seed
Internacional 1 Cruzeiro 0 -21.0
+0.3
Coritiba 0 Vitória 1 +11.9
-0.1
América-MG 2 Sport Recife 2 -0.9
If winner is:HomeEmpateAway
Week of 12/4100.0*Serie B100.0*Average seed
Fluminense vs InternacionalYesYes-46.9
-0.3-0.3+0.6
Sport Recife vs Figueirense+12.7-9.9-9.9
-0.2+0.1+0.1
Vitória vs Palmeiras+4.2+4.1-3.4
-0.1-0.1+0.1

What If

Chances based on how well the Internacional finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleLibertadores1234567891011121314151617181920Serie BCount
451-0-0NoNo17533130.9%14,674,017
42-43NoNo100Yes30,962,943*
Total:NoNo5177877.8%45,636,960

* Row combines multiple less frequent records.

Points
Chance Will Win Championship