How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Sunday, 4/5100.0*Chance wins title100.0*Promoted100.0*Average seed
Great Britain 4 Poland 0 -0.9
-0.9
Croatia 1 Kazakhstan 12 +0.2
+0.2
+0.0
Monday, 4/6100.0*Chance wins title100.0*Promoted100.0*Average seed
Great Britain 0 Kazakhstan 2 Yes
Yes
+0.5
Points
Chance Will Win Championship