The following are the ten largest stock market crashes in history, along with the percentage decline from the peak to the trough:

Great Depression Crash (1929-1932) - The stock market decline was 89%, with the Dow Jones Industrial Average (DJIA) falling from its peak of 381 points in 1929 to a low of 41 points in 1932.

Black Monday Crash (1987) - The stock market decline was 22.6%, with the DJIA falling from its peak of 2,722 points on October 19, 1987, to a low of 2,246 points on October 20, 1987.

Dot-com Bubble Burst (2000-2002) - The stock market decline was 78%, with the NASDAQ Composite falling from its peak of 5,048 points on March 10, 2000, to a low of 1,114 points on October 9, 2002.

Global Financial Crisis (2007-2009) - The stock market decline was 56.8%, with the DJIA falling from its peak of 14,164 points on October 9, 2007, to a low of 6,547 points on March 9, 2009.

Asian Financial Crisis (1997-1998) - The stock market decline was 65%, with the Nikkei 225 falling from its peak of 38,957 points on December 29, 1989, to a low of 13,871 points on October 8, 1998.

Oil Crisis Crash (1973-1974) - The stock market decline was 45%, with the DJIA falling from its peak of 1,051 points on January 11, 1973, to a low of 577 points on December 6, 1974.

Savings and Loan Crisis (1989-1990) - The stock market decline was 19.9%, with the DJIA falling from its peak of 2,870 points on July 16, 1990, to a low of 2,296 points on October 11, 1990.

Russian Financial Crisis (1998) - The stock market decline was 31%, with the DJIA falling from its peak of 9,337 points on July 17, 1998, to a low of 6,410 points on August 31, 1998.

1970s Stagflation Crash (1976-1978) - The stock market decline was 27.6%, with the DJIA falling from its peak of 1,038 points on September 21, 1976, to a low of 751 points on March 6, 1978.

9/11 Terrorist Attacks (2001) - The stock market decline was 11.6%, with the DJIA falling from its peak of 9,605 points on September 10, 2001, to a low of 8,489 points on September 21, 2001.

It's important to note that these historical stock market crashes are not necessarily indicative of future performance, and past performance is not a guarantee of future results.