Step 1: We make the assumption that 150 is 100% since it is our output value.
Step 2: We next represent the value we seek with $x$x.
Step 3: From step 1, it follows that $100\%=150$100%=150.
Step 4: In the same vein, $x\%=52.5$x%=52.5.
Step 5: This gives us a pair of simple equations:
$100\%=150(1)$100%=150(1).
$x\%=52.5(2)$x%=52.5(2).
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS (left hand side) of both equations have the same unit (%); we have