-24.61% is the change from 512 to 386
Calculation steps:
[( 386 - 512 ) ÷ 512] x 100 = -24.61%
Formula
Percentage change = [(386 - 512) / 512] x 100
Subtract the new number by the original number
386 - 512 = -126
-126 ÷ 512 = -0.24609375
-0.24609375 x 100 = -24.61%