Is 0.69 percent of people who are reporting side effects? If it is, then the percentage of people experiencing tinnitus or hearing loss would be even lower when considering the number of total administered doses.
Either way, those numbers are significantly less than the number of individuals with COVID-19 who are experiencing auditory problems. I recall one study reported around 40 percent of people who caught COVID-19 experienced an increase in pre-existing tinnitus.
I also looked through the reports specific to Pfizer and many were episodes of short-term tinnitus that occurred in conjunction with elevated heart rates, fevers, mild allergic reactions, headaches, etc.