The percentage bar only serves to guide you along the process and give you an indication of how many of the fields you've filled out.
You do not need to reach 100%.
We collect a lot of different data points and most hotels will not reach 100% if they don't offer all the different services and amenities for which we collect information. This article explains what to do in sections where you can't provide information, e.g. if your hotel does not have a swimming pool.
So don't worry too much about this value. You can submit your profile for review as soon as the mandatory fields have been filled out. Read this article to learn more about how to submit your profile for review and have it set live.