Answer
$-720^{\circ}$
Work Step by Step
One revolution is $360^{\circ}$, so $-2$ revolutions is $-2(360^{\circ})=-720^{\circ}$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.