There are no actual values given in this percent problem, so we'll begin by assuming that the original retail price of the camera was $100. So if that price is discounted by 20 percent, the new price of the camera is $80. If that price is then discounted by 20 percent, the final sale price of the camera is $80 - $16 = $64 (since 20% of 80 = 16).
Now read the question carefully: it asks what percent "greater" is the original retail price than the final sale price, so set up the numbers carefully:
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