Current Attempt in Progress

Blood flows through a section of a horizontal artery that is partially blocked by a deposit along the artery wall. As a hemoglobin molecule moves from the narrow region into the wider region, its speed changes from $v_2=0\mathrm{.}800\frac{m}{s}$ to $v_1=0\mathrm{.}323\frac{m}{s}.$ What is the change in pressure, $P_1-P_2,$ that it experiences? The density of blood is $1060k\frac{g}{m^3}.$