In project management, how do you find Planned Value and Earned Value?

Example:

We have 200 rooms that need light fixtures, in each room only five lightbulbs fit. The budget is $500,000 your schedule is 14 weeks.

After eight weeks, 110 rooms are done and you have spent $250,000.

I understand that the formula is: Planned Value=(Planned % Completed) X BAC

But how do I get the percentage if it's not listed in the question?

Same thing for earned value, if the formula is earned value= % of completed work X BAC.

How would I find the percentage in this example?