How are these numbers calculated?

Big Games

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

Week of 5/19100.0*Quartas de final100.0*Average seed
Colírio 30 Itabira 29 -17.6
-0.9
Belenenses 45 Limaco 18 -3.2
-0.2
FGE 34 Sociedade Franciscana 13 -3.2
-0.2
FGC 10 Rashid 41 -3.0
-0.2
Sinani 19 Dima FAC 14 +2.0
+0.0
Aleixo 42 Braz 35 +1.6
+0.1
Cabedelo 30 AAFDD 20 -0.1
Week of 5/26100.0*Quartas de final100.0*Average seed
Itabira 45 Cabedelo 42 +25.3
+1.0
Braz 21 FGE 32 -6.6
-0.1
Congresso 24 Colírio 13 +5.7
+0.2
Rashid 30 Belenenses 28 +0.7
AAFDD 34 Sinani 31 +0.1
+0.1
Week of 6/2100.0*Quartas de final100.0*Average seed
Cotegipe 30 Belenenses 26 Yes
+0.2
Itabira 33 Sinani 16 Yes
+0.7
Limaco 40 FGE 38 +0.2
Rashid 57 Aleixo 17 -0.2
Points
Chance Will Make Playoffs