Here is Matt's $Silver % +/- 200MA chart from his newsletter.

FWIW, second chart is my TS version using a simple oscillator indicator, so the % difference can be calculated automatically. Horizontal '0' line represents the MA.

Here is the TS code if anyone wants to track any given security for % +/- price extremes vs any stipulated MA (and MA type):

Inputs:
    Length(200),
    Price(close),
    MA_Type(1);
 
Vars:
PctAboveBelowAvg(0),
MyMovingAvg(0);
 
 
if currentbar>length then 
    begin
        if MA_Type=1 then MyMovingAvg = Average(Price, Length);
        If MA_Type=2 then MyMovingAvg = xAverage(Price, Length);
        If MA_Type=3 then MyMovingAvg = wAverage(Price, Length);
        If MA_Type=4 then MyMovingAvg = triAverage(Price, Length);
    end else
        MyMovingAvg=price;
PctAboveBelowAvg =  iff(Price > 0,100*(Price - MyMovingAvg)/MyMovingAvg, -1) ; 
Plot1(PctAboveBelowAvg);
Plot2(0);