pre_text: corporate income taxes other than withholding taxes on certain investment income and premium excise taxes . if group or its bermuda subsidiaries were to become subject to u.s . income tax , there could be a material adverse effect on the company 2019s financial condition , results of operations and cash flows . united kingdom . bermuda re 2019s uk branch conducts business in the uk and is subject to taxation in the uk . bermuda re believes that it has operated and will continue to operate its bermuda operation in a manner which will not cause them to be subject to uk taxation . if bermuda re 2019s bermuda operations were to become subject to uk income tax , there could be a material adverse impact on the company 2019s financial condition , results of operations and cash flow . ireland . holdings ireland and ireland re conduct business in ireland and are subject to taxation in ireland . available information . the company 2019s annual reports on form 10-k , quarterly reports on form 10-q , current reports on form 8- k , proxy statements and amendments to those reports are available free of charge through the company 2019s internet website at http://www.everestregroup.com as soon as reasonably practicable after such reports are electronically filed with the securities and exchange commission ( the 201csec 201d ) . item 1a . risk factors in addition to the other information provided in this report , the following risk factors should be considered when evaluating an investment in our securities . if the circumstances contemplated by the individual risk factors materialize , our business , financial condition and results of operations could be materially and adversely affected and the trading price of our common shares could decline significantly . risks relating to our business fluctuations in the financial markets could result in investment losses . prolonged and severe disruptions in the public debt and equity markets , such as occurred during 2008 , could result in significant realized and unrealized losses in our investment portfolio . although financial markets have significantly improved since 2008 , they could deteriorate in the future . such declines in the financial markets could result in significant realized and unrealized losses on investments and could have a material adverse impact on our results of operations , equity , business and insurer financial strength and debt ratings . our results could be adversely affected by catastrophic events . we are exposed to unpredictable catastrophic events , including weather-related and other natural catastrophes , as well as acts of terrorism . any material reduction in our operating results caused by the occurrence of one or more catastrophes could inhibit our ability to pay dividends or to meet our interest and principal payment obligations . subsequent to april 1 , 2010 , we define a catastrophe as an event that causes a loss on property exposures before reinsurance of at least $ 10.0 million , before corporate level reinsurance and taxes . prior to april 1 , 2010 , we used a threshold of $ 5.0 million . by way of illustration , during the past five calendar years , pre-tax catastrophe losses , net of contract specific reinsurance but before cessions under corporate reinsurance programs , were as follows: .
post_text: .
table: Calendar year: Pre-tax catastrophe losses
table: (Dollars in millions)
table: 2013 $195.0
table: 2012 410.0
table: 2011 1,300.4
table: 2010 571.1
table: 2009 67.4
question: Analyse this data from a financial earnings document. what was the amount of change in pre-tax catastrophe losses from 2010 to 2011 in millions