-54.32% is the change from 521 to 238
Calculation steps:
[( 238 - 521 ) ÷ 521] x 100 = -54.32%
Formula
Percentage change = [(238 - 521) / 521] x 100
Subtract the new number by the original number
238 - 521 = -283
-283 ÷ 521 = -0.5431861804222649
-0.5431861804222649 x 100 = -54.32%