The percent (per cent) sign % is the symbol used to indicate a percentage, a number or ratio as English style guides prescribe writing the percent sign following the number without any space between (e.g. 50%). In French, the percent sign must be spaced with a non-breaking space. "The Chicago Manual of Style". Mar 14, 2017 - Results 1 - 10 of 27 - Chicago's former usage serves both simplicity and logic. compass a 10 percent raise. Both noun and adjective French Canadians. South Asian Americans. The Chicago Manual of Style, our preferred guide, says that in nontechnical writing, we should spell out “whole numbers from one through one hundred, round The Chicago Manual of Style [chapter 13] addresses just about every issue that might come Percentage expressions should be written out as words: Last semester, de Gaulle, Charles (With French names, the de goes before the last name Aug 7, 2015 -