-5.27% is the change from 512 to 485
Calculation steps:
[( 485 - 512 ) ÷ 512] x 100 = -5.27%
Formula
Percentage change = [(485 - 512) / 512] x 100
Subtract the new number by the original number
485 - 512 = -27
-27 ÷ 512 = -0.052734375
-0.052734375 x 100 = -5.27%