Decryption of encrypted device galaxy J7

[avnishgor85]

I encrypt my samsung galaxy J7 device running marshmallow 6.0 and SD card both. But now my device doesn't show option for decryption of device. How can I decrypt my device?? Please help.

 

[Rukbat]

Copy everything off the card (to a PC or cloud drive), format the card, copy everything back to the card.