How are these numbers calculated?

Big Games

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

Week of 4/6100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Linense 3 Oeste 1 +12.4
No
+1.1
Penapolense 3 Guarani 0 -5.5
-0.1
Corinthians 2 Sao Bernardo 0 -1.8
Ponte Preta 1 Palmeiras 2 -1.8
Botafogo-SP 1 Sao Paulo 3 +0.8
Mogi Mirim 2 Paulista 0 +0.1
A. Sorocaba 1 Oeste 0 +0.0
Week of 4/13100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Linense 2 Corinthians 1 +17.4
+0.6
Botafogo-SP 1 Bragantino 0 -1.7
+0.2
Penapolense 1 Sao Caetano 1 +0.1
Sao Paulo 0 XV Piracicaba 1 -0.1
Week of 4/21100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Mirassol 3 Linense 0 Out
-0.5
Santos 2 Penapolense 1 +14.4
+0.1
Bragantino 0 Ponte Preta 0 +0.1
Points
Chance Will Make Playoffs