I have 3 matched pretest/postests sets. Participants sizes in the groups are 4, 8 and 13. My Likert scale has 5 places, and I have 14 valid questions. We are applying for a grant and want to demonstrate to the grantors that our treatment has been helpful to our clients. Grantors would like us to provide a percentage of "improvement" for each item and overall. My statistics are rusty, but I am good at application. Any suggestions on how I can provide the grantors with a percentage measurement?
Edit: The scale responses are as follows: "Not at all," "Rarely," "Sometimes," "Often," and "Very Often." Participants can start anywhere, and can move anywhere from 0 to 4 steps up or down the scale. I considered whether I could have each step as a 20% change, then again it seems as if there are actually 9 places of measurement since participants can move up or down the scale. The question is not if the person reaches a particular level on the scale, but rather if they perceive any changes in their way of viewing of or reacting to situations. The simpler the better, as long as it is an acceptable from of measurement. The intervals are indeed quite large thus far, however there is only a space on the grant application for %, and there is not a place for descriptors of significance.