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
Belenenses 45 Limaco 18 +13.2
+0.5
Colírio 30 Itabira 29 +5.1
+0.2
Sinani 19 Dima FAC 14 +2.7
+0.1
FGE 34 Sociedade Franciscana 13 -2.3
-0.1
FGC 10 Rashid 41 -1.8
-0.1
Aleixo 42 Braz 35 +1.7
+0.1
Week of 5/26100.0*Quartas de final100.0*Average seed
Rashid 30 Belenenses 28 -11.4
-0.8
Itabira 45 Cabedelo 42 -9.5
-0.2
Braz 21 FGE 32 -5.1
-0.2
Congresso 24 Colírio 13 +0.5
AAFDD 34 Sinani 31 +0.2
Week of 6/2100.0*Quartas de final100.0*Average seed
Cotegipe 30 Belenenses 26 No
-0.5
Limaco 40 FGE 38 +38.1
+0.6
Itabira 33 Sinani 16 -22.1
-0.3
Points
Chance Will Make Playoffs