-67.97% is the change from 512 to 164
Calculation steps:
[( 164 - 512 ) ÷ 512] x 100 = -67.97%
Formula
Percentage change = [(164 - 512) / 512] x 100
Subtract the new number by the original number
164 - 512 = -348
-348 ÷ 512 = -0.6796875
-0.6796875 x 100 = -67.97%