The phrase "a big reduction from" is correct and usable in written English.
It can be used when discussing a significant decrease in quantity, size, or amount compared to a previous figure or standard.
Example: "The company reported a big reduction from last year's profits, indicating a need for strategic changes."
Alternatives: "a substantial decrease from" or "a significant drop from".
The Bush administration has said that it plans to reduce strategic nuclear weapons to between 1,700 and 2,200 warheads, a big reduction from the 6,000 or so nuclear weapons that the United States has now.
Netflix will receive the shows 8 days after their season finale – a big reduction from the 4 months it had to wait before, under its prior deal.
"We don't need to worry about a big reduction from here, but this correction could continue for the next couple of months," Credit Suisse equity strategist Shinichi Ichikawa told the Associated Press.
The regulations seek a big reduction in emissions from New York's power plants, the source of about one-quarter of the state's overall greenhouse gas emissions.
The coalition government has announced it will scrap payments in Child Trust Funds from January, following a big reduction in the amounts from August.
Natalie Chapman, from the Freight Transport Association, told the BBC her organisation had seen a big reduction in the number of calls from lorry drivers worried about the situation in Calais in the past fortnight.
But previous budget talks have bogged down over British demands for a big reduction in farm spending — and counterdemands from France that London surrender its rebate.
Next Monday, the Williams Commission on public services is likely to recommend a big reduction in the number of councils from the current 22.
Due to a big reduction in sample size, we excluded from this group haploinsufficient genes [ 37].
Sweden is also seeking a big reduction in spending — more than €150 billion from the seven-year package.
Mark A. Nocero, the district's superintendent, said a big reduction in the increase in state aid — from 11.75 percent for this year to 4.62percentt for next year — gave the district no choice.
