[78-L] What's 74RPM as a percentage from 78?

[Steven C. Barr]

From: "David Lennick" <dlennick at sympatico.ca>
> Got a spoken word record here, the label indicating that the proper 
> playback
> speed is 74RPM. So that's not something I can pitch by ear. How far down
> (percent) should I take this?
>
94.17

Steven C. Barr