-47.22% is the change from 521 to 275
Calculation steps:
[( 275 - 521 ) ÷ 521] x 100 = -47.22%
Formula
Percentage change = [(275 - 521) / 521] x 100
Subtract the new number by the original number
275 - 521 = -246
-246 ÷ 521 = -0.472168905950096
-0.472168905950096 x 100 = -47.22%