We have in many cases - where Diskpart Clean was accidentally run on a wrong drive - recovered the whole drive back but in all those cases they did nothing further to the disk. In such a condition we can easily restore the drive by running the Partition Recovery Wizard, for a "diskpart clean" only zeroes sector 0 to 2047. The partition boot records at 2048 ( the first partition start point) and other partition boot records with all data will still be intact.
You made a monumental mistake by formatting and reinstalling Windows and creating a new volume D:
The new data which you are referring may perhaps be in the 150GB of your old D: drive which has now been gobbled up and merged into your C drive. Most of that data would have already been overwritten by Windows.