We need to find the percentage of the discount over a camera that had previously cost $600 and now is on sale for $204.
In order to find that percentage, we need to find the total discount (previous cost minus cost on sale) and then divide the result y the previous cost.
The total discount is:
Then, dividing this result by the previous cost, we obtain:
Now, we can write it as a percentage:
Answer: 66%