-16.21% is the change from 512 to 429
Calculation steps:
[( 429 - 512 ) ÷ 512] x 100 = -16.21%
Formula
Percentage change = [(429 - 512) / 512] x 100
Subtract the new number by the original number
429 - 512 = -83
-83 ÷ 512 = -0.162109375
-0.162109375 x 100 = -16.21%