  PHENIX measurement of the fractional momentum loss ($d p_T/p_T$) of high
$p_T$ identified hadrons are presented. The $d p_T/p_T$ of high $p_T$ pizero
which are computed from 39GeV Au+Au over to 2.76TeV Pb+Pb are found to vary by
a factor of six. We plotted the $d p_T/p_T$ against several global variables,
$N_{part}$, $N_{qp}$ and $dN/deta$, and found global features. It was found
that 200GeV Au+Au points are merging into the central 2.76TeV Pb+Pb points when
plotting $d p_T/p_T$ against $dN/deta$.
