The IAU did not demote Pluto
It is now anticipated that the International Astronomical Union will leave Pluto as a planet and add Ceres, the largest asteroid, Xena, in the Kuiper Belt with its moon, Gabrielle, and Pluto and Charon, which orbit a center of gravity outside of the body of Pluto or the body of Charon, hence a binary planet. So instead of narrowing the list of planets to eight, the IAU will be voting on August 25th to add three more listed planets.

It appears that the organization yielded to the pressure of students who wanted Pluto to remain, since they think it was named for the beloved dog, Pluto. However, the students might be alarmed to know that it was originally named like most of the other planets after a Roman god, the god of the underworld, chosen because it started with PL, the initials of Percival Lowell, the astronomer who theorized the planet's location, which was later discovered at his observatory. The Roman god's equivalent in Greek is Hades, the god of death and the grave. The word Hades is commonly found in the Greek texts of the Bible.

So let's see now the order that we would use to learn the names of the accepted planets: Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto-Charon, Xena.