2125% is the change from 28 to 623
Calculation steps:
[( 623 - 28 ) ÷ 28] x 100 = 2125%
Formula
Percentage change = [(623 - 28) / 28] x 100
Subtract the new number by the original number
623 - 28 = 595
595 ÷ 28 = 21.25
21.25 x 100 = 2125%
Example