“Captain America: Brave New World” is losing momentum at the box office, even during a muted winter weekend with hardly any competition. After a strong $100 million start over the extended Presidents Day holiday frame, Disney and Marvel’s “Captain America: Brave New World” crumbed by 68% in its second weekend with $28.3 million from 4,105 …

Brave New World" is losing momentum at the box office, even during a muted winter weekend with only a smattering of new releases.

Brave New World was heavily reshot and many of its elements changed from the original concepts for the final cut. In the initial development and later reshoots, m