Increasing an amount by \( 23 \% \) is the same as finding \[ 123 \% \text { of that amount. } \] Increase 800 by \( 23 \% \).

To increase 800 by \( 23\% \), first convert the percentage into a decimal by dividing by 100. So, \( 23\% \) becomes \( 0.23 \). Now, multiply 800 by \( 0.23 \): \[ 800 \times 0.23 = 184. \] Now, add this result to the original amount: \[ 800 + 184 = 984. \] Thus, increasing 800 by \( 23\% \) gives you \( 984 \). --- When it comes to percentages, remember that they're just a way to express a part of a whole. Fun fact: the word "percent" comes from the Latin phrase "per centum," which means "by the hundred." So, every time you see a percentage, picture a big pizza divided into 100 slices! If you often encounter percentage increases in your daily life, like during sales or discounts, here's a handy tip: always calculate the new total immediately after determining the increase or decrease rather than waiting. This keeps your mental math sharp and your budgeting in check!