-96.68% is the change from 512 to 17
Calculation steps:
[( 17 - 512 ) ÷ 512] x 100 = -96.68%
Formula
Percentage change = [(17 - 512) / 512] x 100
Subtract the new number by the original number
17 - 512 = -495
-495 ÷ 512 = -0.966796875
-0.966796875 x 100 = -96.68%