-46.18% is the change from 511 to 275
Calculation steps:
[( 275 - 511 ) ÷ 511] x 100 = -46.18%
Formula
Percentage change = [(275 - 511) / 511] x 100
Subtract the new number by the original number
275 - 511 = -236
-236 ÷ 511 = -0.461839530332681
-0.461839530332681 x 100 = -46.18%