Rising living costs are making life more difficult for Bang Udin Soto, a street food vendor in the Indonesian capital Jakarta. His priority is a better life for his children. But as new FT analysis shows, he is one of almost a billion people in the developing world who are at risk of slipping out of the ranks of a nascent middle class as emerging economies slow.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
