Answer:
[tex]24.14\text{ \%}[/tex]Explanation: The original length of Rayan's room was 29ft and it was shortened by 7ft:
Therefore the new length was:
[tex]29ft-7ft=22ft[/tex]The percent decrease would be:
[tex]\frac{7}{29}\times100=24.14\text{ \%}[/tex]