Answer: There is 30% of its new sales came from new clients.
Explanation:
Since we have given that
In 2014,
Percentage of its new sales came from existing clients = 70%
Total percentage = 100% ( as we take whole percentage to be 100 always)
So, Percentage of its new sales came from new clients is given by

Hence, there is 30% of its new sales came from new clients.