Google AdWords introduced new Comparison Option!Posted by on October 27, 2012 01:10 AM
Google recently introduced a new drop down option in the AdWords Interface that allows you to compare dates. You have to remember, when comparing dates; do not compare a date range that has two Saturdays in one range and only one in the other. Your goal is to always compare apples with apples (e.g. a Monday to Friday compared to the previous Monday to Friday).
As shown in the image below, it will show you your account compare to ranges with metrics on a table as well and show percent increase or decrease in line with key metrics like CTR, Conversions, Cost Per Conversion etc.