How do I make to see two labels(N(count) & its %) at the same time on Pie chart.

[#1]

I just know that we can select an option for Label display to "value" & "percent" through the Label on the Graph.

but i would like to see both values at the same time on the chart.

[#2]

Most likely there are other options but here are few (I'm using JMP's Big Class as example table).

One option is to overlay two identical pie charts and then use custom formatting for the "N" label (you could do that for % label, but it easier to do for N), in this case I added row change to the custom format

You could also create new column which has those "label" values and use that for your pie chart.

New Column("Column 6",
	Character,
	"Nominal",
	Formula(
		"N: " || Char(Col Number(:sex, :sex)) || "
" ||
		Char((100 * Col Number(:sex, :sex)) / Col Number(:sex)) || "%"
	),
	Set Selected
)

[#3]

You can check if the caption box option helps as well, setting location to group by factor and play with X/Y Position.