2124.14% is the change from 29 to 645
Calculation steps:
[( 645 - 29 ) ÷ 29] x 100 = 2124.14%
Formula
Percentage change = [(645 - 29) / 29] x 100
Subtract the new number by the original number
645 - 29 = 616
616 ÷ 29 = 21.24137931034483
21.24137931034483 x 100 = 2124.14%