-16.99% is the change from 512 to 425
Calculation steps:
[( 425 - 512 ) ÷ 512] x 100 = -16.99%
Formula
Percentage change = [(425 - 512) / 512] x 100
Subtract the new number by the original number
425 - 512 = -87
-87 ÷ 512 = -0.169921875
-0.169921875 x 100 = -16.99%