The cost of a Personal computer was $2,000 in 1990. In 2000, the price had decreased to $500. What was the percent decrease in the cost of the Personal computer?
Choose the correct option.
A) 25%  B) -30%  C) -75%  D) 40%  E) 90%
Decrease = 2000-500= 
<gadget id="calculator">2000-500</gadget>
<output>1_500</output>
1500   % decrease= 1500*100/2000 = -75%   Answer: option -75%
<result>C</result>
The cost of a Personal computer was $2,000 in 1990. In 2000, the price had decreased to $500. What was the percent decrease in the cost of the Personal computer?