1944% is the change from 25 to 511
Calculation steps:
[( 511 - 25 ) ÷ 25] x 100 = 1944%
Formula
Percentage change = [(511 - 25) / 25] x 100
Subtract the new number by the original number
511 - 25 = 486
486 ÷ 25 = 19.44
19.44 x 100 = 1944%
Example