Early in $2022,$ the exchange rate between the Swiss franc $($CHF$)$ and the euro and the was

$1\mathrm{.}07$ CHF $=1$ EUR. On August $23$ of $2022,$ the exchange rate was $0\mathrm{.}96$ CHF $=1$ EUR.

The change in the value of the euro against the Swiss franc was $\_\_\_\%.$ Answer in the positive for appreciation and in the negative for depreciation.

Where applicable, round to $4$ decimal places in your calculations.

Answer to two decimal places and do not include the percent symbol in your answer. For example, if the euro appreciates $78\mathrm{.}43\%$ against the Swiss franc answer $78\mathrm{.}43.$ If the euro depreciates against the Swiss franc by $78\mathrm{.}43\%$ enter $-78\mathrm{.}43.$