function estimate_num_underlying_percentage%(pub_percent)
%takes a percentage, usually from a published paper, and finds the
%numerator and denominator that led to the published percentage, within correct rounding, such that
%the denominator is as small is possible
pub_percent=72.3
frac_portion=pub_percent-floor(pub_percent)
dec_places=length(num2str(frac_portion))