What is the percentage increase in the production of Company Y from 1996 to 1999 ?

Answer: Option D

Explanation:

To get the percentage increase in the something, we have to first get the difference between the final value and initial value, then we can get the calculate that difference is what percentage of "initial value"

So lets solve it,

Percentage increase in the production of Company Y from 1996 to 1999
\begin{aligned}
=\left[ \frac{40-25}{25}*100 \right]\% \\
=\left[ \frac{15}{25}*100 \right]\% \\
= 60 \%
\end{aligned}