How are these numbers calculated?

Big Games

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

Week of 9/5100.0*Chance in playoffs100.0*Average seed
City Stars 1 Impact 2 Out
Thunder 5 Islanders 2 +0.3
Battery 1 Thunder 3 +0.2
Miami FC 1 Rhinos 2 +0.2
Miami FC 3 Aztex 1 -0.1
Battery 2 Miami FC 1 +0.0
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Impact 1 Thunder 1 +0.0
Rhinos 0 Miami FC 0 -0.0
Week of 9/19100.0*Chance in playoffs100.0*Average seed
Miami FC 1 Islanders 3 +0.2
Thunder 2 Battery 3 -0.1
Points
Chance Will Make Playoffs