Formula
(5 ÷ 100) x 420 = 21
Convert percent to decimal
5% to decimal is 5 ÷ 100 = 0.05
Multiply the decimal number with the second number
0.05 x 420 = 21
For example, John needs 5 percent of the shares to be in power. The number of shares is 420. How many shares does John need to buy? What is 5 percent of 420? 5 percent to decimal is equal 5 / 100 = 0.05 0.05 x 420 = 21 so John need to buy 21 shares