The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary?  Select
A) 910% increase  B) 10% increase  C) 9% decrease  D) 12% decrease  E) 15% increase
(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?