Reordering matrix columns to be the same in two matrices

I have two matrices one containing experimental and the other simulated output from an ODE model and I want to subtract the simulated matrix from the experimental.The columns however have been reordered in the experimental matrix such that I can no longer just perform the subtraction. My question is how could I reorder one of the columns of one matrix to be the same as the columns in the other matrix based on the column headings? Additionally, I need this to work for every experimental/simulated data pair of matrices.

Code so far:

    data=xlsread(data_file); %experimental
    traj=SBsimulate(model,start_time:(end_time/number_of_points):end_time) %simulated

Thank you