Is the value of the new amount greater than or less than the value of the original amount?
≈ 42 % decrease
Practice makes perfect
To determine the percent change p, we can use the following general formula.
p % =Amount of increase or decrease/Original amountFrom the given weights, we can see that the original weight is greater than the new weight. To find the decrease, we have to subtract the new amount from the original one.
140 14 - 80 34 = 59 12
Knowing how much the weight decreased, we can now use the formula to calculate the percent decrease.
