-51.86% is the change from 511 to 246
Calculation steps:
[( 246 - 511 ) ÷ 511] x 100 = -51.86%
Formula
Percentage change = [(246 - 511) / 511] x 100
Subtract the new number by the original number
246 - 511 = -265
-265 ÷ 511 = -0.5185909980430529
-0.5185909980430529 x 100 = -51.86%