You should be able to use MATLAB's readmatrix function, e.g
data = readmatrix('myfile.xlsx','Range','90:233')
or if the start and end row numbers are variables
startRow = 90
endRow = 233,
range = [num2str(startRow),':',num2str(endRow)] % build string eg '90:233'
data = readmatrix('myfile.xlsx','Range',range)

