3290.48% is the change from 21 to 712
Calculation steps:
[( 712 - 21 ) ÷ 21] x 100 = 3290.48%
Formula
Percentage change = [(712 - 21) / 21] x 100
Subtract the new number by the original number
712 - 21 = 691
691 ÷ 21 = 32.904761904761905
32.904761904761905 x 100 = 3290.48%