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
Abedi Pelé 18 AE Popular 13 -0.1
FAC Metropolitano 23 Esquina de Baixo 20 (ot)-0.0
Week of 5/17100.0*Average seed
Floresta Negra 36 Abedi Pelé 15 +0.2
Week of 5/24100.0*Average seed
Liga Operária 23 Abedi Pelé 18 +0.4
Esquina de Baixo 17 Olimorque 19 -0.3
Chance Will Win Championship