3.6% decrease
Explanation:Initial value = $24000
Final value = $23160
We apply percentage decrease formula:
[tex]\text{ \% decrease = }\frac{\text{initial - final}}{Initial}[/tex][tex]\begin{gathered} \text{ \% decrease = }\frac{24000\text{ - 23160}}{23160}\times100 \\ \text{ \% decrease = }\frac{840}{23160}\times100 \\ \text{ \% decrease = }0.036\text{ }\times100 \end{gathered}[/tex][tex]\text{ \% decrease = 3.6\% decrease}[/tex]