How are these numbers calculated?

Big Games

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

Week of 10/17100.0*Chance in playoffs100.0*Average seed
Geylang 0 Hougang 4 -12.9
-0.1
Tampines 3 Balestier 1 -10.7
-0.6
Y. Lions 2 Hougang 0 +8.1
+0.1
Home 2 Warriors 3 +0.8
+0.1
Week of 10/24100.0*Chance in playoffs100.0*Average seed
Hougang 4 T. Pagar 2 -36.4
-0.4
DPMM 1 Balestier 1 -2.9
-0.2
Albirex 2 Home 1 +0.3
Week of 10/31100.0*Chance in playoffs100.0*Average seed
Balestier 0 Home 1 Out
-0.8
Points
Chance Will Make Playoffs