/usr/share/doc/libscalc-dev/changelog.Debian.gz is in libscalc-dev 0.2.4-4.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libscalc-dev/../libscalc0v5/changelog.Debian.gz
/usr/share/doc/libscalc-dev/../libscalc0v5/changelog.Debian.gz