How are these numbers calculated?

Big Games

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

Friday100.0*Chance in playoffs100.0*Average seed
Portland 2 Bridgeport 3 -1.2
-0.8
St. John's 1 Hartford 4 -0.4
-0.2
Binghamton 4 Hershey 2 +0.2
Lehigh Valley 1 W-B/Scranton 2 -0.1
Saturday100.0*Chance in playoffs100.0*Average seed
Springfield 3 Portland 2 (so)-3.2
-0.9
W-B/Scranton 1 Providence 3 -3.1
-0.1
Albany 3 Bridgeport 0 In
+0.3
St. John's 2 Hartford 1 +0.4
Hershey 4 Lehigh Valley 2 -0.3
Sunday100.0*Chance in playoffs100.0*Average seed
Springfield 1 Portland 3 +1.5
Points
Chance Will Make Playoffs