The Markup options control how changes are identified. If formatting changes are not important, disable the Track formatting checkbox.

In addition, you can select to disable or enable formatting changes to the document. This can be enabled or disabled using the Track moves checkbox in this dialog. Tracking moved text is new to Microsoft Word 2007 and has not appeared in previous versions. In the Track Changes Options dialog, you can configure the colors and formatting used for each type of change. The exact colors and formatting used for the track changes can be configured by clicking the small arrow on the bottom right corner of the Track Changes button and click the Change Tracking Options menu. If you highlight and move a sentence or paragraph, the sentence will be marked with double strikeout where it was removed from and double underlined where it is moved to. If you are using the default settings, deleted words will have strikethrough formatting applied to them and inserted words will be colored and underlined. With Track Changes enabled, inserted and deleted words will be marked with some form of coloring or highlighting. The Track Changes Options dialog lets you configure what color and formatting attribute is used for each type of change in the document

Document inspector in excel 2007