The insert for my ProAir©HFA states it delivers 108 µg albuterol sulfate (equivalent to 90 µg of albuterol).
They lowered the speed of delivery, and inreased the weight of the 'bullet'. The new formulation is not effective.
I have already noted my dissatisfaction with the new delivery method. I note, however, that the medication is not different. Proventil used the same formulation before and after the propellant change — there’s no difference in the medication.