Hi there. This is not an out of the box functionality, but you may be able to accomplish this by adding JavaScript to the HTML of your end of survey message. The JS would run upon the hyperlink being clicked. The JS would include an API call to update the survey response or call a JSON endpoint that runs a workflow to update the survey response. The survey response would be updated with a flag to indicate that the hyperlink was pressed. You could then report on what % of your responses have the flag indicating the link was pressed.