Bang Bang showed growth of around 50% on its second Saturday. The Friday and Saturday collections of the second week are as follows.
Bang Bang
Friday - 3,15,00,000
Saturday - 4,75,00,000
TOTAL - 7,90,00,000
Haider showed growth of around 85% on its second Saturday. The Friday and Saturday collections of the second week are as follows.
Haider
Friday - 1,40,00,000
Saturday - 2,60,00,000
TOTAL - 4,00,00,000
On a side note... this website BOI is so biased. First of all they make predictions and statements about how certain films will do which they shouldn't be doing anyways. When a film they are against has collections that have dropped their headline mentions it however when that film shows growth it just has a basic headline.