-97.27% is the change from 512 to 14
Calculation steps:
[( 14 - 512 ) ÷ 512] x 100 = -97.27%
Formula
Percentage change = [(14 - 512) / 512] x 100
Subtract the new number by the original number
14 - 512 = -498
-498 ÷ 512 = -0.97265625
-0.97265625 x 100 = -97.27%