[![enter image description here](https://i.stack.imgur.com/rD1Xc.png)](https://i.stack.imgur.com/rD1Xc.png)

I want to manipulate the above pandas Dataframe to find the percentage of 'Days to 1st login < 14 days" by each 'Sales Chain' and grouped by every day, to have the answer like: "On 1st May, 20% users from web sale while 5% users from other sale channel logged in within 14 days"

So then I could plot the line chart of all the sale channels over the time based on these percentage figures.

Please advise me how to do so. Thank you.