-47.07% is the change from 512 to 271
Calculation steps:
[( 271 - 512 ) ÷ 512] x 100 = -47.07%
Formula
Percentage change = [(271 - 512) / 512] x 100
Subtract the new number by the original number
271 - 512 = -241
-241 ÷ 512 = -0.470703125
-0.470703125 x 100 = -47.07%