-25.78% is the change from 512 to 380
Calculation steps:
[( 380 - 512 ) ÷ 512] x 100 = -25.78%
Formula
Percentage change = [(380 - 512) / 512] x 100
Subtract the new number by the original number
380 - 512 = -132
-132 ÷ 512 = -0.2578125
-0.2578125 x 100 = -25.78%