-45.12% is the change from 512 to 281
Calculation steps:
[( 281 - 512 ) ÷ 512] x 100 = -45.12%
Formula
Percentage change = [(281 - 512) / 512] x 100
Subtract the new number by the original number
281 - 512 = -231
-231 ÷ 512 = -0.451171875
-0.451171875 x 100 = -45.12%