In the Bohr model of the hydrogen atom, the ratio of the kinetic energy to the total energy of the electron in a quantum state n is

The total energy of an electron bound to an atom is negative and is the sum of its P.E. and K.E. The magnitude of the P.E. is twice that of the K.E. (as per the Bohr model) but since the P.E. is -ve, we have
Total Energy = (-2K) + (K) =-K
(K= Kinetic energy). Hence the ratio of total energy and kinetic energy = -1 : 1 = -1.