How to show the count for title (exclude repetitive rows in the same title)

[Kittipak_Pakjam]

As shown in the right photo that “China = 7”, the number represents all the rows for filter “China”. However, I want the number to just show only the news per country which in this case is 3 as shown in the left photo.

How do I do it?

Thank you very much in advance for the answer.

Best Regards,
K