-30.71% is the change from 521 to 361
Calculation steps:
[( 361 - 521 ) ÷ 521] x 100 = -30.71%
Formula
Percentage change = [(361 - 521) / 521] x 100
Subtract the new number by the original number
361 - 521 = -160
-160 ÷ 521 = -0.30710172744721687
-0.30710172744721687 x 100 = -30.71%