As a user,
When I go to the summary tab of the software,
I want to see what is the cumulative profit or loss for my portfolio.
The cumulative profit and loss is calculated with the following formula:
((current portfolio value - total investment)/total investment)*100) displayed in %
As a user, When I go to the summary tab of the software, I want to see what is the cumulative profit or loss for my portfolio.![image](https://user-images.githubusercontent.com/35256279/46397271-b029a900-c6e9-11e8-9b08-e80e9e9aef1b.png)
The cumulative profit and loss is calculated with the following formula: ((current portfolio value - total investment)/total investment)*100) displayed in %