So reported the Times of India here in October:
Credit Suisse's Global Wealth Report 2014 released on Tuesday says that there are one billion adults at present who belong to the middle class - with wealth anywhere between $10,000-$100,000 range.
The Global Wealth Report 2014 itself may be viewed here, from which the pyramid at the left.
Notice the relatively small size of the global middle class, just 21.5% of the world's adults, with the vast majority of these coming first from China, and then second from the Asia-Pacific region, followed by Europe, Latin America and North America in that order, according to the details on pages 24ff.
Update: The inaugural Global Wealth Report in 2010 here actually showed a LARGER global middle class adult population of 1.045 billion then vs. the 1.01 billion today, a 3.3% decline. As a percentage of the world's adult population, the middle class share also has declined, from 23.5% of all adults in 2010 to 21.5% in 2014, a decline of 8.5%.
Update: The inaugural Global Wealth Report in 2010 here actually showed a LARGER global middle class adult population of 1.045 billion then vs. the 1.01 billion today, a 3.3% decline. As a percentage of the world's adult population, the middle class share also has declined, from 23.5% of all adults in 2010 to 21.5% in 2014, a decline of 8.5%.