For the crystal field splitting in octahedral complexes:
The energy of the $e_g$ orbitals will decrease by $\frac{3}{5} \Delta_o$ and that of the $t_{2g}$ will increase by $\frac{2}{5} \Delta_o$.
The energy of the $e_g$ orbitals will increase by $\frac{3}{5} \Delta_o$ and that of the $t_{2g}$ will decrease by $\frac{2}{5} \Delta_o$.
The energy of the $e_g$ orbitals will increase by $\frac{3}{5} \Delta_o$ and that of the $t_{2g}$ will increase by $\frac{2}{5} \Delta_o$.
The energy of the $e_g$ orbitals will decrease by $\frac{3}{5} \Delta_o$ and that of the $t_{2g}$ will decrease by $\frac{2}{5} \Delta_o$.
