-15.36% is the change from 521 to 441
Calculation steps:
[( 441 - 521 ) ÷ 521] x 100 = -15.36%
Formula
Percentage change = [(441 - 521) / 521] x 100
Subtract the new number by the original number
441 - 521 = -80
-80 ÷ 521 = -0.15355086372360843
-0.15355086372360843 x 100 = -15.36%