-46.88% is the change from 512 to 272
Calculation steps:
[( 272 - 512 ) ÷ 512] x 100 = -46.88%
Formula
Percentage change = [(272 - 512) / 512] x 100
Subtract the new number by the original number
272 - 512 = -240
-240 ÷ 512 = -0.46875
-0.46875 x 100 = -46.88%