3380.95% is the change from 21 to 731
Calculation steps:
[( 731 - 21 ) ÷ 21] x 100 = 3380.95%
Formula
Percentage change = [(731 - 21) / 21] x 100
Subtract the new number by the original number
731 - 21 = 710
710 ÷ 21 = 33.80952380952381
33.80952380952381 x 100 = 3380.95%