Question

Need the steps to question #65 to get the answer 166.6% from my answer key

Answer 1

Basically, multiply by 100%. You may find it easier to convert to an improper fraction first.
  1 2/3 = 5/3 = 5/3*100% = (500%)/3 ≈ 166.67%

_____
Your answer key has incorrectly rounded the result.