-68.75% is the change from 512 to 160
Calculation steps:
[( 160 - 512 ) ÷ 512] x 100 = -68.75%
Formula
Percentage change = [(160 - 512) / 512] x 100
Subtract the new number by the original number
160 - 512 = -352
-352 ÷ 512 = -0.6875
-0.6875 x 100 = -68.75%