Displaying only Top N% of Values

[pbininja1]

Hello All,

My data is in the below format -

I want show values and L2 region when I select a L3 region. But I want to display only those values that are in the top 10% of values (of the selected region). My dataset is quite large with 800K entries and there are a lot of entries whose values are quite small. So I want a user's focus only the big ticket values (i.e. top 10% of values).

Please help!

[pbininja1]

I tried the solution in https://community.powerbi.com/t5/Desktop/Top-N-percent-filter/td-p/682552 but it doesn't work for me.