1948% is the change from 25 to 512
Calculation steps:
[( 512 - 25 ) ÷ 25] x 100 = 1948%
Formula
Percentage change = [(512 - 25) / 25] x 100
Subtract the new number by the original number
512 - 25 = 487
487 ÷ 25 = 19.48
19.48 x 100 = 1948%
Example