Private Superforecasting Workshop and erikbays ask:
What will be the 12-month percentage change in the US Consumer Price Index (CPI) for September 2021?
The CPI is a measure of inflation calculated by the US Bureau of Labor Statistics (BLS) (Investopedia). The question will be suspended on 30 September 2021 and the outcome will be determined using the 12-month percentage change as first released by the BLS for "All items" in September 2021 (BLS). For September 2020, the change was 1.4%.