You are investigating a drop in conversion in the Quora signup and onboarding funnel. Over the last 2 weeks, the rate from account creation to first follow topic selection fell from 68% to 54%, while earlier steps like landing page to signup click stayed flat. The decline started shortly after a signup flow update on Quora Web and a new prompt asking users to personalize their feed before reaching Home. Leadership wants to know whether the issue is tracking, traffic mix, or a real product problem.
How would you use data to identify a drop in conversion at a specific step in the funnel?