Dax Dynamic Measure

Hi anvikuttu 

Try to modify the way in which you use the EXCEPT function.  I haven't tested the below but give it a go and modify to your needs:

New Fruits Flag = 

VAR SlicerMonth1 = SELECTEDVALUE( Month_Table_1[Month] )

VAR SlicerMonth2 = SELECTEDVALUE( Month_Table_2[Month] )

VAR FruitsInMonth1 = 

    CALCULATETABLE (
        VALUES( Raw_Data[Fruits] ) ,
        Raw_Data[Month] = SlicerMonth1
    )
	
VAR FruitsInMonth2 = 
    
	CALCULATETABLE(
        VALUES( Raw_Data[Fruits] ) ,
        Raw_Data[Month] = SlicerMonth2
    )
	
VAR NewFruitsInMonth2 = EXCEPT ( FruitsInMonth2 , FruitsInMonth1 )
VAR CurrentFruit = SELECTEDVALUE ( Raw_Data[Fruits] )

RETURN

IF ( 
	CurrentFruit IN NewFruitsInMonth2 , 
	"Yes", "No"
	)

Make sure to place this measure in the visual where you have the fruits listed down and it should dynamically show "Yes" for new fruits in the selected comparison months.

Hoping this helps mate.

Theo