Confronting a column value month by month

Hi Guys!

Yesterday I found the solution, just in case someone has a similar problem, I'll leave it here:

EVALUATE
VAR Table =
FILTER(
SUMMARIZE(
'Demographic Data',
'Demographic Data'[Flow Date],
'Demographic Data'[ID],
'Demographic Data'[Full Name],
'Demographic Data'[Contract Type]),
[Flow Date] > DATE(2022,11,30) &&
[Flow Date] < DATE(2024,01,31))

VAR Prev_Contract =
ADDCOLUMNS (
Table,
"Prev_Contract",
VAR ID = [ID]
VAR Date = [Flow Date]
VAR Prev_Date = EOMONTH(Date, -1)
RETURN
CALCULATE (
MAX('Demographic Data'[Contract Type]),
FILTER (
'Demographic Data',
'Demographic Data'[ID] = ID &&
[Flow Date] = Prev_Date)))

VAR Contract_Change =
ADDCOLUMNS (
Prev_Contract,
"Contract Change",
IF ( [Contract Type] <> [Prev_Contract], "Y", "N"))

VAR Filtered_Change =
FILTER(
Contract_Change,
[Contract Change] = "Y" &&
[Prev_Contract] <> BLANK())

RETURN
SELECTCOLUMNS (
Filtered_Change,
"ID", [ID],
"Employee", [Full Name],
"Previous Contract", [Prev_Contract],
"Current Contract", [Contract Type],
"Contract Change", [Contract Change],
"Change Date", FORMAT([Flow Date], "DD/MM/YYYY"))

ORDER BY [Change Date] Asc

It works and gives the desired output, but could be made a little bit more efficient syntax wise.