3371.43% is the change from 21 to 729
Calculation steps:
[( 729 - 21 ) ÷ 21] x 100 = 3371.43%
Formula
Percentage change = [(729 - 21) / 21] x 100
Subtract the new number by the original number
729 - 21 = 708
708 ÷ 21 = 33.714285714285715
33.714285714285715 x 100 = 3371.43%