How are these numbers calculated?

Big Games

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

Week of 1/5100.0*Chance in playoffs100.0*Average seed
Sydney 0 New Zealand 1 -0.1
Week of 1/12100.0*Chance in playoffs100.0*Average seed
Adelaide 1 Sydney 0 -0.2
Perth 3 Newcastle 3 In
Week of 1/19100.0*Chance in playoffs100.0*Average seed
Central Coast 1 Adelaide 3 -0.6
Brisbane 1 Sydney 1 -0.1
Points
Chance Will Make Playoffs