Compare 2 Groups data from different time period and find Growth / De growth in % percentage

I have connected with Google sheet. It has day wise data and I would like to compare data from different time period and find Growth / De growth in % percentage.

Please suggest solution for the same.

For more clarity sharing you my “Weekly Report” crated in Looker Studio. Also see attached screenshot for the same.

Report URL
https://lookerstudio.google.com/u/0/reporting/dc049214-a7ff-45ae-b0f9-d9fd804ab573/page/p_nka5ppwqmd/edit