-94.53% is the change from 512 to 28
Calculation steps:
[( 28 - 512 ) ÷ 512] x 100 = -94.53%
Formula
Percentage change = [(28 - 512) / 512] x 100
Subtract the new number by the original number
28 - 512 = -484
-484 ÷ 512 = -0.9453125
-0.9453125 x 100 = -94.53%