From March 3-5 Zelda: BoTW sold 193,060 at retail (no digital) on Switch in Japan according to Famitsu https://www.famitsu.com/news/201703/07128430.html
According to Famitsu there were 330,637 Switch consoles sold in the same time span (March 3-5).
So BotW (retail version) had a 58% attach rate on Switch.
Comparison to previous 3D home console Zeldas (source):
N64 The Legend of Zelda: Ocarina of Time First week: 386.234 LTD: 1.143.570 Nintendo 11/21/1998
N64 The Legend of Zelda: Majora's Mask FW: 314.044 LTD: 601.542 Nintendo 4/27/2000
NGC The Legend of Zelda: The Wind Waker FW: 287.346 LTD: 742.609 Nintendo 12/13/2002
WII The Legend of Zelda: Skyward Sword FW: 194.894 LTD: 349.143 Nintendo 11/23/2011
WII The Legend of Zelda: Twilight Princess FW: 145.068 LTD: 554.109 Nintendo 12/2/2006
NGC The Legend of Zelda: Twilight Princess FW: N/A LTD: 70.000 Nintendo 12/2/2006
The Wii U version's sales aren't provided.
According to Famitsu there were 330,637 Switch consoles sold in the same time span (March 3-5).
So BotW (retail version) had a 58% attach rate on Switch.
Comparison to previous 3D home console Zeldas (source):
N64 The Legend of Zelda: Ocarina of Time First week: 386.234 LTD: 1.143.570 Nintendo 11/21/1998
N64 The Legend of Zelda: Majora's Mask FW: 314.044 LTD: 601.542 Nintendo 4/27/2000
NGC The Legend of Zelda: The Wind Waker FW: 287.346 LTD: 742.609 Nintendo 12/13/2002
WII The Legend of Zelda: Skyward Sword FW: 194.894 LTD: 349.143 Nintendo 11/23/2011
WII The Legend of Zelda: Twilight Princess FW: 145.068 LTD: 554.109 Nintendo 12/2/2006
NGC The Legend of Zelda: Twilight Princess FW: N/A LTD: 70.000 Nintendo 12/2/2006
The Wii U version's sales aren't provided.