How do you calculate percentage change between sequential elements in array?

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I have a 14400x11 array of values from the output of a hyperbolic function and want to calculate the sequential percentage change from, for example, the first element in the first row and column a(i,j) to the second element in the second row and first column a(i+1,j). How can I do this?

Accepted Answer

A Jenkins
A Jenkins on 20 Jun 2014
X=rand(3,4)
percent_change=diff(X)./X(1:end-1,:)

More Answers (1)

dpb
dpb on 20 Jun 2014
pct=100*diff(a(:,1))./a(1:end-1,1);

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