Particularly if you one of your performance objectives is to improve your company's position in search engine search results, it is very useful to track where your target pages are appearing in search results. Use a spreadsheet into which you put the number of the page it appears on and use the exact same keywords to do the search (otherwise you are comparing apples with oranges).

If you do decide to change the keywords, make a note of it in your spreadsheet. That way you can tie any jumps or drops in page position with a change in the search words you used.

Type the exact keywords into the spreadsheet also.

If you like, you could track several sets of keywords. Be sure to keep them separate. I like to track the page number of the same search words for my competitors, as you can see in this fictitious example below.