How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Chance wins title
Bradford 1 Milton Keynes 2 No
Grimsby 1 Peterborough 4 +4.0
Morecambe 1 Lincoln City 2 -0.1
Week of 5/3None
Points
Chance Will Win Championship