How are these numbers calculated?

Big Games

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

Week of 5/10100.0*Campeonato Nacional100.0*Average seed
Paternos 25 Poti 15 +20.4
-0.7
Jiquiá FAC 39 Serafiano 10 -5.6
+0.2
Abedi Pelé 18 AE Popular 13 -4.3
+0.1
União Militar 20 Liga Operária 18 +0.4
Week of 5/17100.0*Campeonato Nacional100.0*Average seed
Poti 30 Olímpia 28 -21.2
+0.7
União Militar 28 Jiquiá FAC 39 -6.2
+0.2
AE Popular 10 Paternos 22 -6.0
+0.2
Serafiano 30 FAC Metropolitano 27 (ot)+5.8
-0.2
Liga Operária 43 Siliar 37 +1.7
-0.2
Week of 5/24100.0*Campeonato Nacional100.0*Average seed
FAC Metropolitano 27 União Militar 13 -7.1
+0.3
Liga Operária 23 Abedi Pelé 18 +6.3
-0.3
AE Popular 40 Olímpia 37 +6.3
-0.3
Poti 42 Dima Cardinals 42 (ot)+2.1
+0.0
Zopene 37 Serafiano 15 +0.2
Points
Chance Will Win Championship