How do you subtract a percent in money?

To subtract a percent from a monetary amount, first convert the percentage into a decimal by dividing it by 100. Then, multiply the original amount by this decimal to find the dollar amount to subtract. Finally, subtract this dollar amount from the original amount to get the result. For example, to subtract 20% from $50, calculate 50 x 0.20 = $10, and then $50 - $10 = $40.