An economy is characterized by the following production function:
\[
Y = A K^{0.25} L^{0.75}
\]
where \(K\) denotes capital, \(L\) denotes labour, \(A\) denotes the total factor productivity, and \(Y\) denotes output produced. All capital and labour are fully employed. Suppose that the growth rate of labour is 1%, the growth rate of capital is 4%, and the growth rate of output is 4%. The growth rate of total factor productivity \(A\) is: