forfiles modified files excluding newly created - batch-file

Question

I am trying to write code that will allow me to identify files in a folder that have been modified since the beginning of the month, but that are not newly created (signifying a revision change). Outputting the number of changed files is more important than the name of the modified files, but it can be either.
I have tried to use forfiles to achieve this, but am unable to figure out how to do this without it also listing newly created files.
I have thought that maybe searching for files created before the beginning of the month yet modified within the last month might be the answer, but am unsure how to do this. My code so far still shows newly created files.
#echo off
REM set revisions folder path
set revisions="C:\Users\nlehman\Desktop\New folder (3)\\"
forfiles /P %revisions% /S /D +08/01/2019 > "Revisions last 30days.txt"

Answer 1

I will make a SWAG and think that you want to identify files written in the current month, but were created earlier than the last time they were written. Is that close?
Place all four (4) files in the same directory. This assumes that if the difference between the creation time and last write time is less than one (1) second, that there has not been a revision.
=== revs.bat
#powershell -NoLogo -NoProfile -File "%~dp0revs.ps1"
=== revs.ps1
$RevDir = 'C:\Users\nlehman\Desktop\New folder (3)'
$CloseEnough = New-Timespan -Seconds 1
Get-ChildItem -File -Recurse -Path $RevDir |
Where-Object {
($_.LastWriteTime -ge (Get-Date (Get-Date) -day 1 -hour 0 -minute 0 -second 0)) -and
(($_.LastWriteTime - $_.CreationTime) -gt $CloseEnough)
}
=== revsnot.bat
#powershell -NoLogo -NoProfile -File "%~dp0revsnot.ps1"
=== revsnot.ps1
$RevDir = 'C:\Users\nlehman\Desktop\New folder (3)'
$CloseEnough = New-Timespan -Seconds 1
Get-ChildItem -File -Recurse -Path $RevDir |
Where-object {
($_.LastWriteTime -ge (Get-Date (Get-Date) -day 1 -hour 0 -minute 0 -second 0)) -and
(($_.LastWriteTime - $_.CreationTime) -lt $CloseEnough)
}

Answer 2

This is going to hurt the eyes of everyone who reads it as it is quite possibly the absolute worst coding on the history of this site, but it works for its purpose, and is the best I can currently do. I am still learning this stuff, and although this does work, I really would have liked to know how to put my results into variables so I did not have to do it the way I did with .txt files...
#echo off
setlocal enabledelayedexpansion
set revisions="C:\Users\nlehman\Desktop\New folder (3)\\"
dir %revisions% /T:C /A-D /O:-D > %revisions%"creation date.txt"
dir %revisions% /T:W /A:-D /O:-D > %revisions%"modified date.txt"
findstr /vig:"C:\Users\nlehman\Desktop\New folder (3)\creation date.txt" "C:\Users\nlehman\Desktop\New folder (3)\modified date.txt" > "C:\Users\nlehman\Desktop\New folder (3)\difference.txt"
findstr /b "08/" difference.txt > "rev changes.txt"
find /v /c "" "rev changes.txt" > revs.txt
del %revisions%"creation date.txt"
del %revisions%"modified date.txt"
del %revisions%"difference.txt"
type "rev changes.txt" "revs.txt" > "revisions.txt"
del %revisions%"rev changes.txt"
del %revisions%"revs.txt"