First of all check to see which version if any you have available for a downgrade:
apt-cache showpkg packagename
Downgrade/Install old package:
apt-get install package=version
Example
apt-cache showpkg caja
Package: caja
Versions:
1.10.3-1+rafaela (/var/lib/apt/lists/packages.linuxmint.com_dists_rafaela_import_binary-amd64_Packages) (/var/lib/dpkg/status)
Description Language:
File: /var/lib/apt/lists/packages.linuxmint.com_dists_rafaela_import_binary-amd64_Packages
MD5: 2d27e6d6f085ec92e7532bd116bd9d0a
apt-get install caja=1.10.3-1+rafaela
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