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 -21.9
+0.8
Vila Nova 0 Oeste 1 +8.1
-0.2
Atletico-GO 1 Bragantino 0 +6.6
-0.4
Icasa 1 Parana 2 -4.6
-0.1
Oeste 2 Nautico 0 +3.3
-0.2
America-RN 2 Icasa 0 -2.2
Ponte Preta 2 America-RN 2 +1.0
-0.0
ABC 1 Ceara 0 +0.6
-0.1
Luverdense 1 America-MG 2 +0.1
Week of 11/21100.0*Serie C100.0*Average seed
America-RN 1 Nautico 0 +18.6
-0.2
Bragantino 1 Parana 1 +12.5
-0.4
Vila Nova 3 ABC 5 +0.2
-0.1
Week of 11/29100.0*Serie C100.0*Average seed
ABC 0 Bragantino 2 -58.4
+1.0
Parana 4 America-RN 1 -17.1
+0.2
Oeste 1 Joinville 0 +2.0
-0.1
Points
Chance Will Win Championship