"a low share" is correct and usable in written English.
You can use it to describe a quantity that is much lower than the expected or average amount. For example, "Due to the economic downturn, the company is facing a low share of profits this quarter."
Both options would lead to Scotland having a low share of debt to GDP.
They are getting stiffed with a low share price and a probable debt restructuring.
A prime minister will take office on a low share of a low turnout.
A low share price makes it harder to use stock to make acquisitions or pay off obligations.
Children from immigrant families do badly at school and win a low share of apprenticeships, the path into work for many young Germans.
Only around half of consumer spending is taxed at the standard VAT rate of 20%, a low share compared with other rich countries.
They're in a low shared by many realist British films of the time, dejected by a wistful sense of life's limited possibilities.
For methodological reasons, such segments have a low sharing of IBD signals and are prone to be false positives.
A total of 22.4% of patients received adequate osteoporosis-specific treatment, which is a very low share from a medical point of view.
Multiple steady-state equilibria may emerge, one of them taking the form of a low-growth trap characterized by low productivity growth and a misallocation of talent defined as a relatively low share of high-ability workers in design activities.
The structure of value added (Table 7) is characteristic of a semi-industrialized economy with a relatively low share of agriculture (20 %) and large shares of industry and services (27 % and 53 %, respectively).
