-4.49% is the change from 512 to 489
Calculation steps:
[( 489 - 512 ) ÷ 512] x 100 = -4.49%
Formula
Percentage change = [(489 - 512) / 512] x 100
Subtract the new number by the original number
489 - 512 = -23
-23 ÷ 512 = -0.044921875
-0.044921875 x 100 = -4.49%