-62.5% is the change from 512 to 192
Calculation steps:
[( 192 - 512 ) ÷ 512] x 100 = -62.5%
Formula
Percentage change = [(192 - 512) / 512] x 100
Subtract the new number by the original number
192 - 512 = -320
-320 ÷ 512 = -0.625
-0.625 x 100 = -62.5%