-54.88% is the change from 512 to 231
Calculation steps:
[( 231 - 512 ) ÷ 512] x 100 = -54.88%
Formula
Percentage change = [(231 - 512) / 512] x 100
Subtract the new number by the original number
231 - 512 = -281
-281 ÷ 512 = -0.548828125
-0.548828125 x 100 = -54.88%