Question regarding data presentation

Hi everyone.

I'm very new on FACS/FACS analysis and would appreciate if anyone could help!

I performed three independent cell sorting using different passages of my cells.

I did my analysis and gating on flowjo, and I'm wondering how I can make a visualization showing the percentage of my "P4" cells between passage 1 and passage 2.

https://preview.redd.it/y0dgkjaajiae1.png?width=1068&format=png&auto=webp&s=ab3eedaccaf51c8c18d2c0d8d0a3b0fddd9d643e

I tried using prism but since it's just a single data, the bar graph is just like this and I don't think I could do any statistical testing to it apart from visualization.

https://preview.redd.it/7ybhgpufjiae1.png?width=524&format=png&auto=webp&s=8c8b138a7706660f5b669e20e71accbcb4c87427

I also searched about median fluorescence intensity, and to my understanding that it could describe expression level. I tried finding it with flowjo using my compensated surface marker. But since it's a single point data, does it have any meaning apart from showing trend? Since again I cant do any statistical tests on it. Or am I doing something wrong with the analysis?

https://preview.redd.it/a44loxbzjiae1.png?width=514&format=png&auto=webp&s=4b99a429abfd36a924c73f645075b2f2ba3a5819

Any help would be highly appreciated!