How are these numbers calculated?

Big Games

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

Wednesday, 3/14100.0*Chance in playoffs100.0*Average seed
JPP 14 OS 9 -19.1
-0.9
MEL 6 OS 9 +17.9
+0.8
SPA 20 LO 19 -2.7
HA 15 SPA 16 -2.6
BF 29 RS 10 +1.5
+0.0
EG 14 RS 15 -0.8
-0.0
JPP 17 MEL 9 +0.2
EG 15 BF 24 +0.2
HA 12 LO 14 +0.1
Monday, 3/19100.0*Chance in playoffs100.0*Average seed
OS 10 SPA 18 -17.0
-0.4
EG 15 OS 19 +4.1
+0.1
RS 12 JPP 19 +4.1
+0.1
MEL 16 HA 17 -2.2
-0.1
RS 18 QE 3 -2.1
-0.0
MEL 10 SAL 26 -2.0
-0.1
SAL 14 HA 13 -1.1
-0.1
EC 11 LO 23 -0.4
-0.0
BF 5 LO 14 -0.1
Wednesday, 3/21100.0*Chance in playoffs100.0*Average seed
RS 5 HA 22 +5.7
+0.3
JPP 18 SAL 32 Out
-0.1
SPA 21 SAL 17 +1.7
+0.0
RS 2 LO 27 +1.7
+0.1
Games Above .500
Chance Will Make Playoffs