If you are a local business, it can be difficult to tell if your online efforts are driving offline conversions. To help make your life easier, simply set your “get directions” page or tab as a destination URL goal in Google Analytics. With this type of data, you can build a somewhat reliable attribution model for your paid efforts.
More ideally, however, we recommend comparing advertising channel spends with overall revenue growth. So, when we spent $1,000 on Yelp compared to $500, how much more revenue did we make? Was it worth it? Start to notice trends, and you can see where your dollar yields the greatest increase in marginal returns.