Answer
The pi bond will move to the nitrogen, and one of the lone pairs from oxygen will create a pi bond on the left.
The nitrogen will get a negative formal charge.
The oxygen will get a positive formal charge.
Work Step by Step
1. Draw the lone pairs.
2. Find which pattern does that structure fits.
It is the first one, a lone pair (from the oxygen) next to a pi bond.
3. Draw the arrows:
Follow the pattern for a lone pair next to a pi bond.
4. Do the changes based on the arrows.
* Don't forget the formal charges!
