To subtract a percent from a whole number, you need to follow a simple two-step process. First, calculate the amount that corresponds to the percentage you want to subtract. Then, subtract that amount from the original whole number.
Step 1: Calculate the percentage amount
For example, if you want to subtract 20% from 150, you would calculate 20% of 150. This is done by multiplying the whole number by the percentage (in decimal form). So, you convert 20% into decimal form by dividing by 100:
20% = 20 / 100 = 0.20
Now, multiply 150 by 0.20:
150 * 0.20 = 30
Step 2: Subtract the percentage amount from the whole number
Next, take the original number (150) and subtract the amount you calculated (30):
150 – 30 = 120
So, when you subtract 20% from 150, you end up with 120. This method can be applied to any whole number and any percentage you wish to subtract. Just remember, convert the percentage to a decimal first, then multiply and subtract!