顧名思義，“同比”就是同期的比值，一般指今年某月累計(jì)指標(biāo)與去年同月累計(jì)指標(biāo)的比較,同比增長(zhǎng)率=(本期-同期數(shù))÷同期數(shù)×100%如為負(fù)數(shù)則為下降率,計(jì)算去年同比下降或增長(zhǎng)百分比的公式為:(本年經(jīng)濟(jì)數(shù)據(jù)-去年經(jīng)濟(jì)數(shù)據(jù)同期)÷去年經(jīng)濟(jì)數(shù)據(jù)同期×100%，計(jì)算出的數(shù)據(jù)為正，數(shù)字部分為,和去年同期百分比=今天/去年同期數(shù)字*100%。{0}1、去年與今年下降,但某一個(gè)點(diǎn)上升,怎么計(jì)算合理計(jì)算去年同比下降或增長(zhǎng)百分比的公式為:(本年經(jīng)濟(jì)數(shù)據(jù)-去年經(jīng)濟(jì)數(shù)據(jù)同期)÷去年經(jīng)濟(jì)數(shù)據(jù)同期×100%，計(jì)算出的數(shù)據(jù)為正，數(shù)字部分...