Now within few minutes your single large Size PST will be divided into numerous PST files. Then you can compare the actual PST with resulting PST files.
Open & Install Split PST Software
Choose the preferred Outlook Format
Select the Split Option among the given 4 (by date, by year, by size, by folders)
Browse & Select the PST file which you want to break
Choose the destination folder where you want to keep the shrinked file & click on “Next”
Now check the all the information before you click on “Split”
Now within few minutes your single large Size PST will be divided into numerous PST files. Then you can compare the actual PST with resulting PST files.