I mostly play attacking formation, i played possesion based tactics and non possession based. With possession based i mean , i press high up my oppo recover the ball and once ball recovered play "tiki-taka" stretching the play wide or playing through the middle ( mixed focus pass )

For example this
Ball possession - how comes  ?-campman_zpssnaagamw.jpg

Playing like this sometimes i get almost 80% poss ( even with same quality oppo )

Other times i play attacking but not possesion based ( loosing possesion on purpose ) with long passes so once i recover the ball high up my players ( mostly playmakers ) launch fast long balls to sts. Like Liverpool gegenpressing style

For example this
Ball possession - how comes  ?-screenshot-779-.jpg

Of course you can also have more possession playing defensive outplaying the oppo high pressure



So for me what matters for %poss is :
- Formation (most important )
- Type of passing
- Quality
- supporters