How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Average seed
Madureira 0 Boavista 0 -4.6
-0.4
Fluminense 3 Nova Iguacu 1 -1.7
+0.1
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Boavista 2 Vasco da Gama 2 -0.6
Madureira 4 Macae 2 -0.2
Fluminense 1 Botafogo 0 +0.2
Flamengo 1 Vasco da Gama 3 -0.2
Nova Iguacu 4 Resende 2 -0.1
Bangu 1 Volta Redonda 1 +0.0
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Portuguesa vs Boavista-1.0-0.3+1.2
Botafogo vs Macae-0.3+0.1+0.3
Bangu vs Nova Iguacu+0.1+0.1-0.2
Resende vs Vasco da Gama-0.1-0.1+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs123456789101112RelegationCount
141-0-0Out3747150No451,787,417
120-1-0Out144739No285,016,598
110-0-1Out100No451,789,321
Total:Out14211748No1,188,593,336
Points
Chance Will Make Playoffs