How are these numbers calculated?

Big Games

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

Week of 3/31100.0*Chance in playoffs100.0*Average seed
Bragantino 2 Sao Caetano 0 In
+0.3
Palmeiras 0 Mirassol 1 -1.4
Oeste 0 Corinthians 3 +0.8
Mogi Mirim 3 Paulista 1 +0.7
Linense 1 Botafogo-SP 3 +0.6
Ituano 2 Sao Paulo 4 +0.4
Portuguesa 0 Santos 2 +0.1
Guaratingueta 2 Ponte Preta 1 +0.2
Catanduvense 1 Guarani 2 -0.1
Week of 4/7100.0*Chance in playoffs100.0*Average seed
XV Piracicaba 2 Ponte Preta 1 +0.3
Bragantino 1 Oeste 4 -0.3
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Paulista 2 Bragantino 0 -0.3
Ponte Preta 1 Corinthians 2 +0.2
Points
Chance Will Make Playoffs