The World Bank defines moderate poverty as living on less than $2 (PPP) per day and extreme poverty as living on less than $1.25 (PPP) per day.
Here is the poverty data for India and some other countries:
| Country | ||
| India | ||
| Indonesia | ||
| China | ||
| Brazil | ||
| Mexico | 
This means 90 crore Indians live in moderate poverty and 50 crore Indians live in extreme poverty.
Source: Wikipedia