Bar Chart - Display line for 30% of Previous Month's Value
Hello,
We have a bar chart displaying values monthly value. What we want to do is have another line on the chart which would display 30% of the previous month. How would we go about doing this. I tried using some set analysis but the problem is that how do we access the monthly value of each month? And then display 30% of the previous month.
Please find attached the chart we are trying to achieve.