How to find non percentage energy values after wavelet transform?

I am performing a wavelet transform on an ECG signal using the method similar to the one explained in the documentation (<http://www.mathworks.com/help/wavelet/ref/wenergy.html)>. For example:

([C,L] = wavedec(ECG,4,'sym4'); [Ea,Ed] = wenergy(C,L)

However, the Ea and Ed values that are returned are simply percentages. How would one go about finding hard values for the energy?