Use the History... 
button to select a set of results.
Use the Compare With... 
button to select a set of results for comparison.
When you have run metrics more than once or loaded previous metric results, you can compare results:
Use the History... button to select a set of results.
Use the Compare With...
button to select a set of results for comparison.
The results of the comparison are displayed in the same table as the metric results. If there are any differences, the package, class or interface will have two entries. An arrow indicates whether the metric result has gone up or down:
Related Topic: