  We have analyzed the evolution of mass of a stationary black hole in the
standard FRW cosmological model. The evolution is determined specifically about
the time of transition from the earlier matter to the later exotic dark energy
dominated universe. It turns out that the accretion rate of matter on the black
hole of mass $M$ was approximately $10^{54}M^{-1}$ higher than the accretion
rate of exotic dark energy at the time of transition.
