-43.64% is the change from 511 to 288
Calculation steps:
[( 288 - 511 ) ÷ 511] x 100 = -43.64%
Formula
Percentage change = [(288 - 511) / 511] x 100
Subtract the new number by the original number
288 - 511 = -223
-223 ÷ 511 = -0.436399217221135
-0.436399217221135 x 100 = -43.64%