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*Average seed
Siliar 44 Floresta Negra 20 +0.7
Zopene 20 Doza 27 (ot)-0.1
Bolanha 24 Olimorque 17 +0.1
Jiquiá FAC 39 Serafiano 10 -0.0
FAC Metropolitano 23 Esquina de Baixo 20 (ot)-0.0
Week of 5/17100.0*Average seed
Liga Operária 43 Siliar 37 -0.8
Serafiano 30 FAC Metropolitano 27 (ot)+0.1
União Militar 28 Jiquiá FAC 39 -0.0
Doza 40 Olimorque 21 +0.0
Week of 5/24100.0*Average seed
Siliar 26 Jiquiá FAC 35 -0.2
Floresta Negra 12 Paternos 47 +0.2
Points
Chance Will Win Championship