Rather than a %, you might try a number of leasing consultants?
Achieved the highest closing ratio of a team of 10 Leasing Agents
Beyond that, what I think might work best is look up job ads/descriptions for leasing director positions. There, you should hopefully see what skills they find important for that type of position, and you can then reflect that in your resume in some way. That way, your resume doesn't match what you have been doing, but rather what you will be doing.