Sales at the 500 largest chains in the U.S. fell more than 8% last year, according to Technomic’s 2021 Chain Restaurant Report, as chain restaurants closed fewer locations than expected and gained share in a restaurant industry hammered by the pandemic and its dining room closures.

Yet that number doesn’t necessarily demonstrate exactly how bad most of the chain restaurant business had it in 2020, Restaurant Business online says. Much of the Top 500’s performance was concentrated in the 50 largest chains, which were more likely to generate sales growth — and even strong sales growth — thanks to their already heavy use of drive-thrus, delivery and digital sales that proved vital for the industry and its consumers last year.