If you are an Administrator in your Donorfy you can see the changes to a Constituent on the Change Log, which is available on the Constituent's Timeline under the Change Log view. It shows what has been added, changed, and what has been deleted from a Constituent record.
To view the detail of the changes click on the activity and it will display a summary of the information changed, for example:
You can also select which fields you see in the Change Log, through the field select option 
You can select from the following:
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