Which old abilities changed their effect in Pokemon Sun Moon?

Solution 1:

A full list of updated abilities can be found here. In addition to the two you have listed, there are three others. These abilities are:

Parental Bond

• Updated:

  Every move used by the Pokémon will hit twice. The damage inflicted by the second hit is reduced to 25%.

• Difference:

  Second hit only does 25% of the first hit's damage rather than 50%.

Weak Armor

• Updated:

  Physical attacks to the Pokémon lower its Defense stat but sharply raise its Speed stat.

• Difference:

  The Speed stat now increases by two stages rather than one

Pixilate, Aerilate, and Refrigerate

• The power boost has been decreased from 30% to 20%