Horizontal Analysis (Trend Analysis) Percentages for Staas Company's Sales Cost

Essay

Horizontal analysis (trend analysis) percentages for Staas Company's sales cost of goods sold and expenses are listed here. $\begin{array}{lccl} \underline{\text { Horizontal Analysis }} & \underline{2017 }& \underline{2016} & \underline{ 2015}\\\text { Sales } & 98.2 \% & 104.8 \% & 100.0 \% \\\text { Cost of goods sold } & 102.5 & 98.0 & 100.0 \\\text { Expenses } & 108.6 & 96.4 & 100.0\end{array}$ Instructions
Explain whether Staas' net income increased decreased or remained unchanged over the 3-year period.