The given pie charts compare the percentage of users across three apps: Twitter, Facebook, and YouTube. Overall, users aged 18 to 49 make up the majority, while other age groups represent a lower proportion, with the lowest percentage of users being over 65.
In terms of the dominant demographic, the percentage of users in the 35-49 age group is about 29% across the three apps. This age group ranks the highest on both Facebook and YouTube, while it comes in second on Twitter. This is largely due to Twitter, where users aged 18-34 constitute 40%, a significant increase compared to the other two apps, which have about 27% in this age range.
Looking at the younger and older user patterns, the rate of users aged over 65 is the lowest across all three apps, with 10% on YouTube, 8% on Facebook, and only 4% on Twitter. Meanwhile, the ratio of users in the 50-64 age group consistently accounts for approximately one-fifth of the total users. Finally, the youngest age group consistently shows slightly lower rates compared to the previous age group, being 5% lower on average, except for Twitter, where it accounts for only 9%, which is half the amount of the previous age group.