3428.57% is the change from 21 to 741
Calculation steps:
[( 741 - 21 ) ÷ 21] x 100 = 3428.57%
Formula
Percentage change = [(741 - 21) / 21] x 100
Subtract the new number by the original number
741 - 21 = 720
720 ÷ 21 = 34.285714285714285
34.285714285714285 x 100 = 3428.57%