Job Demotion Question:

In some cases, the job title of your new position - if you have been demoted - will clearly indicate a lower level of responsibility. For example, if you were demoted from sales manager to salesperson or from customer service director to customer service associate.

Don't use any negative language like "demoted" on your resume when you list the change. You should simply list the positions separately, and describe the skills and accomplishments associated with each job.