How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Serie C100.0*Average seed
Bragantino 2 Santa Cruz 1 -20.4
+0.9
Atletico-GO 1 Bragantino 0 +13.4
-0.8
Vila Nova 0 Oeste 1 +6.0
-0.2
Oeste 2 Nautico 0 +3.4
-0.2
Icasa 1 Parana 2 -2.7
-0.1
Ponte Preta 2 America-RN 2 -1.8
+0.1
ABC 1 Ceara 0 +1.4
-0.2
America-RN 2 Icasa 0 -0.8
Luverdense 1 America-MG 2 +0.1
Week of 11/21100.0*Serie C100.0*Average seed
America-RN 1 Nautico 0 +18.9
-0.3
Bragantino 1 Parana 1 +6.9
-0.3
Vila Nova 3 ABC 5 +1.1
-0.1
Week of 11/29100.0*Serie C100.0*Average seed
ABC 0 Bragantino 2 -44.8
+0.7
Parana 4 America-RN 1 -24.9
+0.3
Oeste 1 Joinville 0 +7.2
-0.2
Points
Chance Will Win Championship