How are these numbers calculated?

Big Games

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

ThursdayNone
Friday100.0*Chance in playoffs100.0*Average seed
WHL 4 REA 3 +22.1
+0.8
BRM 2 ELM 1 +12.7
+0.3
TOL 3 KAL 2 (ot)-3.5
-0.0
MAN 3 ADK 4 -1.8
-0.2
Saturday100.0*Chance in playoffs100.0*Average seed
REA 2 WHL 4 +1.1
KAL 4 TOL 0 -0.4
ADK 4 MAN 5 +0.2
Points
Chance Will Make Playoffs