Percentage decrease is 16.02%.
$\text{% decrease} = \dfrac{ \color{blue}{ \text{initial value} } - \color{red}{ \text{final value} }}{ \color{blue}{ \text{initial value} } } \times 100$ | $$ \begin{aligned} \color{blue}{ \text{initial value} } &= 5143.9 \\[1.5em] \color{red}{ \text{final value} } &= 4319.7 \end{aligned} $$ |
$\text{% decrease} = \dfrac{ \color{blue}{ 5143.9 } - \color{red}{ 4319.7 } }{ \color{blue}{ 5143.9 } } \times 100 $ | |
$\text{% decrease} = 0.1602 \times 100 $ | |
$\text{% decrease} = 16.02 \% $ |