-35.55% is the change from 512 to 330
Calculation steps:
[( 330 - 512 ) ÷ 512] x 100 = -35.55%
Formula
Percentage change = [(330 - 512) / 512] x 100
Subtract the new number by the original number
330 - 512 = -182
-182 ÷ 512 = -0.35546875
-0.35546875 x 100 = -35.55%