Since when are temperature increases measured in %? Comparing with this other article, it seems are taking figures in °Fahrenheit and dividing them. http://ho

Since when are temperature increases measured in %? Comparing with this other article, it seems are taking figures in °Fahrenheit and dividing them. http://hosted2.ap.org/COGRA/54828a5e8d9d48b7ba8b94ba38a9ef22/Article_2011-06-20-Aging%20Nukes-Brittle%20Vessels/id-22e7f3355e1040dba689ef4d9fd91076 http://hosted2.ap.org/COGRA/54828a5e8d9d48b7ba8b94ba38a9ef22... I.e. 300 °F / 200 °F = 150%, and 356 °F / 200 °F = 178%.