Hi Siva ,
It seems you are trying to get top 20 % of your data and bottom 20 % of data , because when you are telling top 80 and bottom 20 % you are making it hundred .
All you need to do is to create a set for top 20% and bottom 20% and then create a combined set for these two set .
Attaching the link :: Top N and Bottom N Values in single sheet in Tableau - Analytics Tuts
Please have a look .
Wow 9.3!...not used that in ages (feels like an old 8 bit game console, in comparison to new shine Tableau 10.5!)
So not sure exactly what you mean here (the top 20% of what?)
I've guessed that you literally want the sale sliced up in to 2 bars, with one from 0-20%, and the other from 21-100%?
Hopefully you can see how I've done it (using a Dual Axis, with a Bar and Gantt)
Ok. Thansk Simon. I will do