Line Graph in Power BI

[Anonymous]

Hi, 
I need to create a line that shows the weekly Email Open rate 

Example of Original Data:

I have email id, email name, activity date(when an email was sent and opened), SentCount, Open Count, week and month

Assumption:

1. An email is sent only on 1 Date

2. Email can be opened on multiple days

3. OpenWeek is Sent Date - Open Date in Weeks

How can I create a line chart in Power Bi that would show the weekly open rate 

Example if I create a Rate Table:

I want to create a line graph that would should the Weekly Open rates:

[Anonymous]

@amitchandak 
Sorry, I could not follow.
I have an Activity date that has the date of when an activity was done either sent or opened.
Now I need to calculate the open rate in weeks [1, 2 , 3...... 52 weeks] after an email was sent.

And show the open rates in weeks in a line graphs

[Anonymous]

@amitchandak 
The rates will be in % 

[amitchandak]

@Anonymous , Not very clear.

But the measure

Ratio = divide(sum(Table[Open Count]), sum(Table[SentCount]))

Is the one should give %. Then move Week Date(Activity Date), Month and Month week number to Date/week table and create a week Rank column

Week Rank = RANKX(all('Date'),'Date'[Week date],,ASC,Dense)

You can visualize with week of you can create measure to compare

Then measures

measures
This Week = CALCULATE([Ratio], FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])))
Last Week = CALCULATE[Ratio], FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])-1))

Power BI — Week on Week and WTD
https://medium.com/@amitchandak.1978/power-bi-wtd-questions-time-intelligence-4-5-98c30fab69d3
https://community.powerbi.com/t5/Community-Blog/Week-Is-Not-So-Weak-WTD-Last-WTD-and-This-Week-vs-Last-Week/ba-p/1051123
https://www.youtube.com/watch?v=pnAesWxYgJ8