Google Analytics - Goal/Behaviour Flow

Hi all,

I've imported my analytics data into Power BI, and I was wondering if it was possible to visualise a similar version of the Goal or Behaviour Flow Chart in power BI using this data? Perhaps with the waterfall chart.

I can't seem to find anything about it online, and I'm struggling to get my head around how the data is calculated from the data columns you can pull through from GA.

Can anyone get me started?

Thanks!