How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Pirae 4 Auckland City 11 +25.9
+25.9
+1.9
If winner is:HomeDrawAway
Auckland City vs Western United+24.9+0.3-21.1
+24.9+0.3-21.1
+1.5+0.1-1.3
Ba vs Gaïtcha-2.0+3.8+6.3
-2.0+3.8+6.3
-0.1+0.1+0.2
Hekari United vs Team Wellington-1.9+3.3+1.7
-1.9+3.3+1.7
-0.1+0.1+0.1
Tafea vs Team Wellington-1.9+3.3+1.7
-1.9+3.3+1.7
-0.1+0.1+0.1
Tafea vs Hekari United-0.9+3.8-0.9
-0.9+3.8-0.9
-0.0+0.1-0.0
Tefana vs Hekari United+0.2+1.5-1.4
+0.2+1.5-1.4
-0.0+0.1+0.0
Tefana vs Tafea+0.2+1.4-1.4
+0.2+1.4-1.4
-0.0+0.1+0.0
Western United vs Amicale-0.1+0.7-0.3
-0.1+0.7-0.3
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Amicale vs Auckland City-34.5-11.4+21.6
-34.5-11.4+21.6
-1.8-0.2+1.0
Ba vs Pirae-0.4+7.1-3.3
-0.4+7.1-3.3
-0.0+0.1-0.1

What If

Chances based on how well the Auckland City finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
92-0-0InYes76243,518,875
71-1-0InYes28531813,025,144
61-0-187.0%87.0%21437331305,969,626
50-2-067.167.1032143312629,891
40-1-124.024.0032148235002,380,384
30-0-20.80.80111253227402,133,896
Total:72.2%72.2%21191716136530017,657,816
Points
Chance Will Make Playoffs