How are these numbers calculated?

Big Games

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

Week of 11/28100.0*Chance in playoffs100.0*Average seed
Hoffenheim 2 Shakhtar Donetsk 3 In
Olympique Lyonn 2 Manchester City 2 In
Week of 12/12100.0*Chance in playoffs100.0*Average seed
Manchester City 2 Hoffenheim 1 +0.1
Shakhtar Donetsk 1 Olympique Lyonn 1 +0.1
Chance Will Make Playoffs