The phrase "a growing slice of" is correct and usable in written English.
It can be used to describe an increasing portion or segment of a larger group or category.
Example: "A growing slice of the population is becoming more health-conscious and prioritizing fitness."
Alternatives: "an increasing share of" or "a rising segment of".
Sabra's hummus is marketed as nutritious, placing it in a growing slice of the snack market.
No wonder pizza accounts for a growing slice of fast-food consumption.
But cartels derive a growing slice of their income from other illegal activities.
These platforms encompass a growing slice of economic activity and are shifting the scope and efficiency of market and non-market exchanges.
All the while it takes a growing slice of the national betting market, a market that Fletcher says by qualification is static, growing only in line with population.
Members of the Group of 20-plus, in fact, account for a growing slice of world trade and have a broad range of interests.
A steadily growing slice of retail-price inflation has been caused by rising oil and commodity prices.
Wind is more important, accounting for a rapidly growing slice of Britain's power generation, currently at 4percentt of the total (solar is less than 0.2percentt), and will be central to the country's binding 2020 renewable energy targets.
For example, High Frequency Trading HFTT) -- where stocks, options, futures and currencies are bought and sold in split-second trades by sophisticated computer programs -- accounts for a rapidly growing slice of international financial transactions.
Between the consumers, the brewers and the people who depend on them, there's a significant and growing slice of the American public with a direct investment in ensuring clean water throughout the country.
What with this and a continuing price war, Telekom has lost almost a third of its long-distance business and a smaller but growing slice of its international traffic.Telekom has also failed to make its mark abroad.
