The phrase "attributable to sales" is correct and usable in written English.
It can be used when discussing the cause or reason for a particular outcome or result that is linked to sales activities or performance.
Example: "The increase in revenue is largely attributable to sales from our new product line."
Alternatives: "due to sales" or "resulting from sales".
The massive increase in sales was largely attributable to sales of weapons to Saudi Arabia.
Instead of stimulating new car sales, the spike was mostly attributable to sales that would otherwise have occurred over the subsequent 11 months.
In 2007, all but $5.9 billion of the overall surplus of $262.2 billion was attributable to sales to America.
The economy, for example, is still dependent on exports: Before the massive government spending, about 38% of GDP was attributable to sales abroad.
The increase, however, is almost entirely attributable to improved sales of its Jeep models and Dodge trucks.
The revenue shortfall in the quarter, said Fred Anderson, Apple's chief financial officer, was attributable to weak sales of the company's iMac consumer desktop line.
For example, Lexmark International, which makes photo-capable printers, also issued an earnings warning, partly attributable to sluggish sales of inkjet printer cartridges.
Barton E. Crockett, an analyst with Lazard Capital Markets, said that the loss of promotional subscriptions was at least partly attributable to car sales patterns for the quarter, as well as to a shortage of new Japanese cars on the market this summer.
The company said the losses were primarily attributable to disappointing sales of its new Z10 model smartphone.
Alpha Pro reported revenue growth of 65% and earnings growth of 300%, mostly attributable to strong sales of N-95 respirator masks to protect against H1N1.
Thursday's report on GDP showed 1.66 percentage points of the 3.5% growth last quarter was attributable to autos sales benefiting from a Cash for Clunkers induced miniboom.
