Usually, some techniques can help you get off the waitlist like sending an additional recommendation or writing a letter of your interest and commitment to Kellog. Taking any additional classes will also be considered a positive step towards sending a message of your interest in pursuing an MBA. Percentage of applicants getting off the waitlist varies from year to year, so we can only guess on the stats.
Feel free to write if you have any further queries.
General Education- Empowering Intellect