The response percentage is the percentage of people responding to your invitation to fill out the questionnaire. There are three type of respondent statuses. Each respondents status is being represented by a value.
To calculate the response percentage, the following formula is used:
Response Percentage = (Completed respondents/total number of respondents) * 100
For example: a response percentage of 18% means that out of every 100 respondents that you invite to fill out your questionnaire, there are 18 respondents who fill out your questionnaire completely.