-41.26% is the change from 887 to 521
Calculation steps:
[( 521 - 887 ) ÷ 887] x 100 = -41.26%
Formula
Percentage change = [(521 - 887) / 887] x 100
Subtract the new number by the original number
521 - 887 = -366
-366 ÷ 887 = -0.41262683201803835
-0.41262683201803835 x 100 = -41.26%