During 2001, a stock lost 80 percent of its value. During the following year, the stock's value increased by 200 percent. Which of the following is the percent change in the stock's value during those two years? Choose the correct choice from the following answers:
A) 60 percent decrease
B) 40 percent decrease
C) 20 percent increase
D) 60 percent increase
E) 140 percent increase
Assume initial Stock value =100   Decreased by 80%   = 100- (80% of 100)   = 20   Increased by 200%   =20+(200% of 20)   =20+40= 
<gadget id="calculator">20+40</gadget>
<output>60</output>
60   % Change= (Change/Original)*100   Change=(100-60)= 
<gadget id="calculator">(100-60)</gadget>
<output>40</output>
40   Original= 100   40 Percent decrease   ANSWER:40 percent decrease
<result>B</result>
During 2001, a stock lost 80 percent of its value. During the following year, the stock's value increased by 200 percent. Which of the following is the percent change in the stock's value during those two years?