-53.74% is the change from 521 to 241
Calculation steps:
[( 241 - 521 ) ÷ 521] x 100 = -53.74%
Formula
Percentage change = [(241 - 521) / 521] x 100
Subtract the new number by the original number
241 - 521 = -280
-280 ÷ 521 = -0.5374280230326296
-0.5374280230326296 x 100 = -53.74%