~ git diff --shortstat <older-commit> <newer-commit>
62 files changed, 9696 insertions(+), 474 deletions(-)
Or if you want to limit to code changes, e.g. Python, HTML, CSS, JavaScript.
~ git diff --shortstat <older-commit> <newer-commit> -- '*.py' '*.html' '*.css' '.js' '.yml'
36 files changed, 6265 insertions(+), 453 deletions(-)
Now, please share what this means to you and what conclusions you draw from it.