TOTALYTD Evaluates the year-to-date value of the expression in the current context.
Syntax
TOTALYTD(expression,dates[,filter][,year_end_date])
Parameters
Expression – An expression that returns a scalar value.
Dates – A column that contains dates.
Filter – (optional) An expression that specifies a filter to apply to the current context.
Year_end_date – (optional) A literal string with a date that defines the year-end date. The default is December 31.
Return Value
A scalar value that represents the expression evaluated for the current year-to-date dates.
Reference Data
https://docs.microsoft.com/en-us/dax/dax-function-reference