A percent is that number over 100. Thus 63 percent can be written as 63/100. The next thing to note is that "of" in mathematics means "multiplied by." For example, 6 groups of 7 means 6x7. Therefore, the question can be rewritten as 63/100 x 300. If this is calculated it comes out as 189. Therefore 68% of 300 is 189.
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To find 21 percent of 300, you first convert 21 percent to a decimal by dividing by 100, which gives you 0.21. Then, you multiply 0.21 by 300 to get the answer. So, 21 percent of 300 is 63.
63 percent - without using a calculator !
300/100 = 3 (1%)21/3 = 7%
63/100 = 63% The number 63 as a percent is simply written as 63%.
63% of 1,000,000 is 630,000.