51100% is the change from 1 to 512
Calculation steps:
[( 512 - 1 ) ÷ 1] x 100 = 51100%
Formula
Percentage change = [(512 - 1) / 1] x 100
Subtract the new number by the original number
512 - 1 = 511
511 ÷ 1 = 511
511 x 100 = 51100%
Example