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I have two different terms contributing to a sum. One is positive and one is negative(-0.077 and 0.067) How do I note the contribution of these terms in percentage? 0.067/(-0.01) -> -670% doesn't make any sense.

Edit: I know that logically 0.067 is -670% of the sum but I need to measure the relative weight of a term in a sum. Is comparing the absolute values a way to do it?(i.e 0.067/(0.067+0.077))

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    You could do it in terms of absolute values; in that case, the 'total' is 0.077 + 0.067, and the the contribution of the positive part is 0.067/(0.077 + 0.067) = 46,5 %.2011-05-03

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