How to make values below zero positive on x axis: likert scale Graph

[mryeah21]

I created a clear stacked bar chart in excel to display Likert scale responses (strongly disagree to strongly agree) for a questionnaire. However, when placing the disagree and strongly disagree values below zero, i still have negative values on the x axis. I want the x axis to display 0-100% on the negative and positive side of the x axis. How may I fix this problem? Thank you