Chart rate issue

[QSense]

Hi ,

In first chartI have a rate for instance 16 % When I clicked on this rate,

I want to see in second chart the total rate 16% not 100%

My expression is

Sum(CPN_BSD_BRD_PX)

/

Sum(Total <CalendarDate> CPN_BSD_BRD_PX)

How can I do?