A \(33.6 \mathrm{mg}\) sample of a freeze-dried enzyme preparation was injected into a Karl Fisher coulometric titrator and the endpoint was reached in 27.6 seconds at a current level of \(150.7 \mathrm{~mA}\). A blank run under the same conditions and current level require 1.9 seconds to react the endpoint. What was the \(\mathrm{wt} \%\) moisture in the enzyme?