The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary? Select:
A) 3% decrease  B) 5% decrease  C) 9% decrease  D) 8% decrease  E) 6% decrease
(30 * 30)/100= 
<gadget id="calculator">(30 * 30)/100</gadget>
<output>9</output>
9% decrease   Answer: 9% decrease
<result>C</result>
The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary?