1 percent of 21 can be written as 20 percent * 21 =
Use the percentage formulae (P% × Y = X) to find out 1% of 21
P is 1, Y is 21, so the equation will be 1% × 21 = X
Percentage calculation with steps:
X = ( 1 * 21 ) / 100
X = 21 / 100
X = 0.21