Various Financial Data for SunPath Manufacturing for 2012 & 2013

Various financial data for SunPath Manufacturing for 2012 & 2013 follow. $\begin{array}{c}\begin{array}{ll}\\\text { Output: } & \text { Sales } \\\text { Inputs: } & \text { Labor } \\& \text { Raw Materials: } \\& \text { Energy: } \\& \text { Capital Employed: } \\& \text { Other: }\end{array}\begin{array}{rr}\underline{2012} & \underline{2013} \\\$ 300,000 & \$ 330,000 \\\$ 40,000 & \$ 43,000 \\\$ 45,000 & \$ 51,000 \\\$ 10,000 & \$ 9,000 \\\$ 250,000 & \$ 262,000 \\\$ 2,000 & \$ 6,000\end{array}\end{array}$
What is the percentage change in the labor partial productivity measure for SunPath between 2012 & 2013?

A) -9.22
B) 2.33
C) -0.53
D) 2.88
E) 10.39