how to show this expression?

[rcandeo]

I have to put a KPI inside a text box showing the country that has the most growth comparing actual year x prior year.

I use this expression below in a chart straight table and it works using a dimension limits for 1 largest value.

(sum({<[Year] = {'$(vCurrentYear)'}>} amount) - sum({<[Year] = {'$(vPriorYear)'}>} amount))

/

sum({<[Year] = {'$(vPriorYear)'}>} amount)

But how to put this expression showing the Country as below without having the dimension limits for largest valeu, as this is not a chart table anymore?

China - 23.42%

[sunny_talwar]

Just like Gysbert mentioned, try this to get the max Value

Num(Max(Aggr(

(sum({<[Year] = {'$(vCurrentYear)'}>} amount) - sum({<[Year] = {'$(vPriorYear)'}>} amount))

/

sum({<[Year] = {'$(vPriorYear)'}>} amount),

Country)), '##.00%')