How are these numbers calculated?

Big Games

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

Week of 7/24100.0*Chance in playoffs100.0*Average seed
Outlaws 15 Machine 11 -10.0
-0.3
Cannons 18 Nationals 10 -2.6
Week of 8/7100.0*Chance in playoffs100.0*Average seed
Cannons 15 Bayhawks 16 Out
Outlaws 18 Machine 8 Out
Games Above .500
Chance Will Make Playoffs