It is a 55% decrease.
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That will be -40%
18 is what percent of 40= 18 / 40= 0.45Converting decimal to a percentage:0.45 * 100 = 45%
18 is 40% of 45.
To find 18 percent of a number, multiply the number by 0.18. In this instance, 0.18 x 40 = 7.2. Therefore, 18 percent of 40 is equal to 7.2.
40 percent off 18 is a reduction of 7.2 for a final total of 10.8