Need to add growth rate between start date & end date of a filter selection

[Vivek12]

Hey 

I have a dashboard which has month selections in the filters. I need to show in a KPI what has been the growth rate of a parameter between the start date & the end date?
Can any body please help me on this? 

My expression is not working

(sum({[FB.Period]<{$(=Min([FB.Period]))}} Impressions)
/
sum({[FB.Period]>{$(=Min([FB.Period]))}} Impressions))
-1

[Or]

You can't use greater than / less than with this part of the set analysis. Have a look at e.g.

https://community.qlik.com/t5/QlikView-App-Dev/Set-Analysis-for-Less-than-Equal/td-p/366270

[Vivek12]

Thanks a lot for the revert

Can you please write the expression for me?
I got the issue with the usage of signs but seems like there's some issue with the min. function as well. 

Also do i need to use the getfieldselection as well to capture the minimun from the selcted values from the date filter?

[Vivek12]

You can ignore the growth formula and just help with providing the sum before the starting date of the date range in the filter selection

[Vivek12]

You can ignore the growth formula and just help with providing the sum before the starting date of the date range in the filter selection