3310.53% is the change from 19 to 648
Calculation steps:
[( 648 - 19 ) ÷ 19] x 100 = 3310.53%
Formula
Percentage change = [(648 - 19) / 19] x 100
Subtract the new number by the original number
648 - 19 = 629
629 ÷ 19 = 33.10526315789474
33.10526315789474 x 100 = 3310.53%