the answer is $16$ but i want to know how to get the answer

Refer to the figure below for initial performance numbers.

A reduction of $6\mathrm{.}0\%$ on purchases was achieved by the purchasing group. What is the resulting ROA?

Enter your answer as a percentage without symbols. Round your result to $1$ decimal place, if applicable. $(15\mathrm{.}76\%$ is entered as $15\mathrm{.}8$