The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary?  Options:
A) 3% decrease
B) 5% decrease
C) 9% decrease
D) 4% decrease
E) 8% 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?