The attorney ranks at Williams Mullen shrank by 13.5 percent in 2012 — part of a plan to right size, according to the firm’s managing partner.

The midsize Richmond, Va.-based firm dropped 18 spots to No. 175 on this year’s NLJ 350. The number of partner losses totaled 89, and the associate losses added up to 21. The firm’s overall decline to 231 lawyers was the fourth largest by percentage among this year’s NLJ 350 law firms.