Impact of Changes in Transportation Preference

A recent study analyzes the preferences of 1,000 participants regarding modes of transportation in a metropolitan area. The study found that 47% of participants prefer using public transport, while 33% prefer driving personal vehicles. The remaining 20% indicated a preference for walking or cycling.

If the participants who prefer public transport were to be decreased by 10%, while the number of those preferring personal vehicles stays the same, how would this affect the percentage of participants preferring public transport?