In 2016, WB's Batman v Superman: Dawn of Justice dropped roughly 81.3% from the opening Friday to the 2nd Friday, becoming the record breaking 2nd week drop for any comic book film feature. However, this record, that Warner Bros. held for 5 years has now been shattered by a Marvel superhero, Spider-Man.
While the differences can be taken into account, Spider-Man's 2nd Friday was Christmas Eve, along with a pandemic sweeping the nation once again. But the Marvel/Sony masterpiece was the one to defeat the all time record drop.
Spider-Man: No Way Home grossed an outstanding $121 million last Friday, but in its second Friday, box office mojo are reporting a $19.65 million Friday. Down 83.9% (a 2.6% bigger drop than Batman v Superman, the previous record holder.) While taking into account the drop, Spider-Man has already outgrossed the entire run of BvS in a week, and pretty much any movie from under the DC Extended Universe film banner.
However, the drop was to be expected and the Saturday and Sunday that followed performed better than expected. Saturday's Christmas Day gross was well over $31 million (at $31.7 million, up 61.3% from Friday and down 57.1% from the previous Saturday) and Sunday is predicting a very strong $30 million ($30.1M; down just 5% from Saturday and 53.1% from the previous Sunday).
Marvel / Sony and Spider-Man finding an extra $3 million or so for their Friday to gross and let WB keep the record for the biggest drop for a comic book film remains to be seen.