I am trying to conditionally format the progress till date to red for the date in the end date which has already passed or which is lesser than the current date and when the concern filter is yes.
Below is the screen shot:
Please help me how do I Make the progress column red for end dates which have passed or lesser than the current date and when the concern filter is yes

This is one way to color a column based another value (conditional formatting).
Create a calculated field which will hold the color condition (I assume your data is in date format and not string):
IF [Concern] = "Yes" AND [End Date] < TODAY() THEN "RED" ELSE "" END
Create a dummy calculated field:
9.1 Remove "Title" from "Axis Titles"
9.2 Remove the ticker marks
and remove the tickers