-75.59% is the change from 512 to 125
Calculation steps:
[( 125 - 512 ) ÷ 512] x 100 = -75.59%
Formula
Percentage change = [(125 - 512) / 512] x 100
Subtract the new number by the original number
125 - 512 = -387
-387 ÷ 512 = -0.755859375
-0.755859375 x 100 = -75.59%