Complex sentence: Victory has introduced some changes to the commercial since 1985, such as a new announcer, but the footage of Zajdel remains the same, as evidenced by the young man's period clothing and hairstyle.
Split into simpler sentences: Victory has introduced some changes to the commercial since 1985. However, the footage of Zajdel has remained the same, as evidenced by the young man's period clothing and hairstyle.