Percentage increase is 12.7%.
$\text{% increase} = \dfrac{ \color{red}{ \text{final value} } - \color{blue}{ \text{initial value} } }{ \color{blue}{ \text{initial value} } } \times 100$ | $$ \begin{aligned} \color{red}{ \text{final value} } &= 261.59 \\[1.5em] \color{blue}{ \text{initial value} } &= 232.12 \end{aligned} $$ |
$\text{% increase} = \dfrac{ \color{red}{ 261.59 } - \color{blue}{ 232.12 } }{ \color{blue}{ 232.12 } } \times 100 $ | |
$\text{% increase} = 0.127 \times 100 $ | |
$\text{% increase} = 12.7 \% $ |