2985.71% is the change from 21 to 648
Calculation steps:
[( 648 - 21 ) ÷ 21] x 100 = 2985.71%
Formula
Percentage change = [(648 - 21) / 21] x 100
Subtract the new number by the original number
648 - 21 = 627
627 ÷ 21 = 29.857142857142858
29.857142857142858 x 100 = 2985.71%