You can add specific the link for the powered by logo by following the below steps,

1. Login to your Zoho Analytics account.
   
2. Click on the setup icon at the top right. Accounts setting page will open.
   
3. Open the Logo Rebranding tab, upload your business logo. The default Zoho Analytics logo at the top-left of your account will get replaced by your business logo.
   
4. Enter the URL to be linked from within the logo in the Logo URL box. Clicking the logo will take the user to the specified URL.