How do I escape % to make it modulus when piping it to "bc"?

Using the BASH shell, this works:

echo "$RANDOM % 100 " | bc

and this works:

echo "scale=2;$RANDOM*100/7" | bc

but I cannot get SCALE and MODULUS working together no matter what I try. I want random numbers that have one decimal place. What I want is this:

echo "scale=2; $RANDOM%100/10" | bc

or this:

echo "scale=2; ($RANDOM%100)/10" | bc