The goal of this issue is to enhance the Row Evolution reports and let it also display the % relative value for any of the metric where it makes sense (eg. visits, unique visitors, actions, etc.).
This is an improvement following up #1816
For example it would be great to:
These are the issues related in a way or another to % :
Switch to percent display (instead of numbers in reports)
Email reports should contain percentage values column
Make all Transitions or Row Evolutions popovers printable:
Actually, today I wanted to know the IE8 usage evolution on my website, to see if I could drop its support for the next version. But the absolute value means nothing: if there is a lot more visitors a month, of course there will be more IE8 users. So I had to go from month to month to see the percentage and use Excel to get a nice chart...
Also, I'm interested to know the mobile devices usage evolution to see the importance of responsive design on my site, for example.
As @gaumondp shows with these related issues, this could be extended to all others reports where it makes sense, and not only in Row Evolution.
For me, this would be a very great improvement to Piwik.
This is a high wanted requirement for Fujtsu and not limited to only some metrics.