I generated a below retention report. Starting and returning events are same, but I am segmenting return events based on an additional attribute. The attribute only has two possible values and both of them are used as below.
![](https://uploads-us-west-2.insided.com/amplitude-en/attachment/6349ce6f-6a5b-455d-a927-530e6830411e.png)
In the report, shouldn’t sum of the return events equal to 100%?
![](https://uploads-us-west-2.insided.com/amplitude-en/attachment/7ad0e6e2-eb1f-49fc-81ad-4e33e8c94405.png)