4 percent of 821 can be written as 20 percent * 821 =
Use the percentage formulae (P% × Y = X) to find out 4% of 821
P is 4, Y is 821, so the equation will be 4% × 821 = X
Percentage calculation with steps:
X = ( 4 * 821 ) / 100
X = 3284 / 100
X = 32.84