Adele Hello

Adele in the video for "Hello."

Courtesy of VEVO

Adele is the top musical act in the U.S. for a second week, staying atop the Billboard Artist 100 chart (dated Nov. 21) thanks to new single "Hello," which, as previously reported, rules the Billboard Hot 100 for a second week.

Adele's 'Hello' Tops Hot 100 for Second Week; Ariana Grande, Meghan Trainor Hit Top 10

Meanwhile, country singer/songwriter Chris Stapleton blasts back onto the Artist 100 at No. 2, following his multiple wins at the CMA Awards on Nov. 4.

Chris Stapleton Soars to No. 1 on Billboard 200 Albums Chart After CMAs

The Artist 100 measures artist activity across Billboard's most influential charts, including the Hot 100 songs chart, Top Album Sales and the Social 50. The Artist 100 blends data measuring album and track sales, radio airplay, streaming and social media fan interaction to provide a weekly multi-dimensional ranking of artist popularity.

Adele crowns the Artist 100 despite 32 percent decrease in overall activity, with digital song sales again marking her greatest points contributor (58 percent). "Hello" drops by 43 percent to 635,000 in the week ending Nov. 5, according to Nielsen Music, although that sum is still the third-best ever (and almost second-best) for a download. It debuted with a record 1.11 million, shattering the mark established by Flo Rida's "Right Round": 636,000 (Feb. 28, 2009). Streaming remains Adele's next-biggest metric (25 percent), as the piano ballad boasts 47.4 million U.S. streams (down 23 percent), followed by radio airplay (9 percent), as the song surges by 46 percent to 106 million in audience.

Adele's '25' Is a Lock to Sell 1 Million in Its First Week - How About 2?

"Hello" ushers in Adele's third studio album, 25, due Nov. 20.

Stapleton storms back onto the Artist 100 at No. 2 after spending a week at No. 51 on May 23, when his album Traveller entered Top Album Sales at No. 8 with 27,000 sold. After he won all three CMAs categories in which he was nominated (male vocalist of the year, new artist of the year and album of the year, for Traveller) and performed a medley with Justin Timberlake on the broadcast (on ABC), Stapleton gains by 7,659 percent in overall activity, with album sales accounting for 78 percent of his total.

Traveller re-enters Top Album Sales at No. 1, up 6,412 percent from 2,000 sold to 153,000, while on the Billboard 200, the LP is the first title ever to re-enter at No. 1 (after it originally peaked at No. 14 upon its debut), bounding back with 177,000 equivalent album units.

Rounding out the Artist 100 top five, Justin Bieber rises 4-3; Drake rebounds 5-4; and The Weeknd reverses course 6-5.

The highest debut on the Artist 100 belongs to rock cornerstone Def Leppard, which launches at No. 29, as its new self-titled album arrives at No. 1 on Top Rock Albums and Hard Rock Albums, No. 5 on Top Album Sales and No. 10 on the Billboard 200.

Check out the entire Artist 100 here.