This article explains how to see the deduplication status of individual backups.
Yes, you can access the deduplication ratio for individual backups by using a ssh compliant software.
Access the console interface and connect to the backup system using ssh, PuTTY or another ssh v2 compliant client software. Then, enter the following command to show the deduplication statics by Backup ID:
/usr/bp/bin/fileDedup -sv | more