The auditioning percentage number indicates how much is a Premium subscriber auditioning compared to similar Voice Actors. We recommend keeping this number below 200% to receive a fair amount of invitations.
If this number is too high, it means that you are auditioning more than other Voice Actors similar to you. In this case, SmartCast will send you fewer invitations to allow all 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.
We suggest that you audition for a lower number of projects, closer to the average of similar voice actors (usually between one and three auditions per day).
You can check this numbers by going to "My Stats" on your Voice123 account