Google Analytics: Do A Comparative Sales Performance Report In 60 Seconds

From time to time, you want to see how your site performed on a given timeframe, as compared to another previous timeframe. For example, you may want to measure how your site and overall business performed during the first quarter of 2014, then compare that data to the figures and statistics of the first quarter of 2013. This is called a sales performance report. Others like to call it the "benchmarking report" for sales.