For the Multichoice poll type you can choose to show real numbers of respondents, just percentage results or have both real numbers and percentages.
When you create a poll the default is percentage. Nothing is set in stone, you can change this setting quickly and easily by individual poll even when the meeting is live.
For the Open Text poll type you can choose to display the results as a list of responses or in the form of a Word Cloud.
Don't worry if you want to change your mind though because even when you are pushing the results of the poll to the audience you can still change your mind and toggle between the two options.