The auditioning percentage number, indicates how much is a Premium subscriber auditioning compared to similar talents. We suggest to keep this number below 200% in order to receive a fair amount of invitations.
If this number is too high, it means that you are auditioning more than other talents similar to you. In this case, SmartCast will send you less invitations so all our Premium members have an equal chance to audition, considering that all of them pay the same price, but not all of them have the same time to dedicate to the site.
Our suggestion, is that you audition for a lower number of projects, closer to the average of similar voice actors (usually between 1 and 3 auditions per day).
You can check this numbers by going to "My Stats" on your Voice123 account.