-52.73% is the change from 531 to 251
Calculation steps:
[( 251 - 531 ) ÷ 531] x 100 = -52.73%
Formula
Percentage change = [(251 - 531) / 531] x 100
Subtract the new number by the original number
251 - 531 = -280
-280 ÷ 531 = -0.527306967984934
-0.527306967984934 x 100 = -52.73%