Last Year Same Period

@JCK2 , With a date table and time intelligence

Ventas MTD: CALCULATE(SUM(Sales[Sales Amount]),DATESMTD('Date'[Date]))

Last year MTD Sales ? CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(dateadd('Date'[Date],-12,MONTH)))
last year MTD (complete) Sales - CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-12,MONTH))))
Mes detrás de Ventas: CALCULATE(SUM(Sales[Sales Amount]),dateadd('Date'[Date],-1,Month))
Año detrás de Ventas: CALCULATE(SUM(Sales[Sales Amount]),dateadd('Date'[Date],-1,Year))
Last MTD Sales - CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(dateadd('Date'[Date],-1,MONTH)))
Ventas del último mes: CALCULATE(SUM(Sales[Sales Amount]),previousmonth('Date'[Date]))
Last MTD (completar) Ventas : CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-1,MONTH))))
valor del mes anterior: CALCULATE(sum(''Table''[valor total de horas]),previousmonth('Date'[Date]))

diff - [Ventas MTD]-[las latest ventas MTD]
diff % a divide([MTD Sales]-[last MTD Sales],[last MTD Sales])

The same year last year value of the same month : CALCULATE(sum(''Table''[total value of hours]), previousmonth(dateadd('Date'[Date],-11,MONTH)))

Power BI — MTD
https://medium.com/@amitchandak.1978/power-bi-mtd-questions-time-intelligence-3-5-64b0b4a4090e

To get the best out of the time intelligence function. Make sure that you have a date calendar and that it has been marked as the date in the model view. Also, join her with the date column of your events. Recommended:
https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions
https://www.archerpoint.com/blog/Posts/creating-date-table-power-bi


We appreciate your congratulations.

Hello @JCK2

Try something like this:

Revenue MTD PY = 
VAR __today = TODAY()
VAR __lastYear = EDATE ( __today, -12 )
RETURN
CALCULATE (
    [Revenue MTD],
    SAMEPERIODLASTYEAR ( 'Dim Calendar'[Date] ),
    'Dim Calendar'[Date] <= __lastYear
)

O

MTD LY = CALCULATE(TOTALMTD(SUM('Calendar'[Amount]),'Calendar'[Date]),SAMEPERIODLASTYEAR('Calendar'[Date])) 

If it doesn't help, you might consider providing your fictitious pbix that would be helpful for us to investigate further.