How are these numbers calculated?

Big Games

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

Week of 9/5100.0*Chance in playoffs100.0*First-round bye100.0*Average seed
Portland 0 Col Springs 1 +1.1
+18.2
+0.8
Arizona 2 Salt Lake City 3 +0.3
Orange County 2 Los Angeles 1 -0.1
-0.5
-0.0
Austin 2 Seattle 1 +3.4
+0.2
Col Springs 3 Austin 0 +14.3
+0.5
Week of 9/12100.0*Chance in playoffs100.0*First-round bye100.0*Average seed
Arizona 0 OKC 1 -15.3
-0.3
OKC 3 Col Springs 3 +7.2
+0.2
Los Angeles 0 Portland 1 +7.2
+0.2
Portland 0 Sacramento 3 -2.3
-0.1
Vancouver 1 Orange County 1 +1.9
+0.1
Week of 9/19100.0*Chance in playoffs100.0*First-round bye100.0*Average seed
Col Springs 0 Los Angeles 1 No
-1.3
Sacramento 0 Arizona 0 -1.2
+0.2
Points
Chance Will Make Playoffs