-15.63% is the change from 512 to 432
Calculation steps:
[( 432 - 512 ) ÷ 512] x 100 = -15.63%
Formula
Percentage change = [(432 - 512) / 512] x 100
Subtract the new number by the original number
432 - 512 = -80
-80 ÷ 512 = -0.15625
-0.15625 x 100 = -15.63%