The Millennium Development Goals for two thousand fifteen call for a fifty percent decrease in the number of people without safe drinking water and basic sanitation.

VOA: special.2010.04.05

The return, of course, in any given time period is the percentage increase in the portfolio; or, it could be a negative number, it could be a decrease.

当然了，收益率是一定时间内,投资组合的增长率;,也可能是一个负数，表示负增长。

耶鲁公开课 - 金融市场课程节选

The mixture caused the number of stem cells to decrease.

VOA: special.2010.06.01

The amendments are meant to decrease the number of documents NGOs are required to provide and ease the registration process.

VOA: standard.2009.08.04

The military still faces pockets of resistance in the area, but officials say the arrests of top Taliban leaders and the deaths of nearly 2,000 militants have helped decrease the number of recent attacks.

VOA: standard.2009.09.24