This measures the percent of visitors that came to a particular page on your site but failed to browse any further. Usually tracked for entry pages, such as your home page.
How often do visitors accept offers like a newsletter subscription or a download? This number gauges marketing’s effectiveness over time and between products.
Are visitors passing through, or have they committed to a long visit (in this example, 19 minutes)? Remember, longer might mean “more confusing,” unless take rate rises also.