-68.95% is the change from 512 to 159
Calculation steps:
[( 159 - 512 ) ÷ 512] x 100 = -68.95%
Formula
Percentage change = [(159 - 512) / 512] x 100
Subtract the new number by the original number
159 - 512 = -353
-353 ÷ 512 = -0.689453125
-0.689453125 x 100 = -68.95%