Question on Partial Quarters

jl20 , Try datesqtd

Last year same QTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESQTD(dateadd('Date'[Date],-1,Year)))

or force using code like this .

comments are alternates

LQTD QTY forced=
var _max1 = maxx('order',[Order date]) // or //maxx(allselected('Date'), 'Date'[Date]) // or // Today()
var _max = date(year(_max1),month(_max1)-3,day(_max1))
return
if(max('Date'[Date])<=_max, CALCULATE(Sum('order'[Qty]),DATESQTD(dateadd('Date'[Date],-1,Quarter)),'Date'[Date]<=_max), blank())
//OR
//CALCULATE(Sum('order'[Qty]),DATESQTD(dateadd('Date'[Date],-1,Quarter)),'Date'[Date]<=_max)
//TOTALQTD(Sum('order'[Qty]),dateadd('Date'[Date],-1,Quarter),'Date'[Date]<=_max)

or

QTD =
var _max = if(isfiltered('Date'),MAX( 'Date'[Date]) , today())
var _min = eomonth(_max,-1* if( mod(Month(_max),3) =0,3,mod(Month(_max),3)))+1
return
CALCULATE([net] ,Filter('Date','Date'[Date]>= _min && 'Date'[Date] <= _max))

or

Last year QTD =
var _max1 = if(isfiltered('Date'),MAX( 'Date'[Date]) , today())
var _max = date(Year(_max) -1, month(_max) , Day(_max))
var _min = eomonth(_max,-1* if( mod(Month(_max),3) =0,3,mod(Month(_max),3)))+1
return
CALCULATE([net] ,Filter('Date','Date'[Date]>= _min && 'Date'[Date] <= _max))