将NX1矩阵的一个元素与另一个元素进行分解

I have the following nX1 matrix, here n is very large, I want to carry out the following operation- (2nd term) minus (first term) ,that is (2.25555-1.45656),(4.74096-2.25555),(440.0000-4.74096) and so on.... for the remaining 'n' number of rowsI have the following nX1 matrix, here n is very