-7.1% is the change from 521 to 484
Calculation steps:
[( 484 - 521 ) ÷ 521] x 100 = -7.1%
Formula
Percentage change = [(484 - 521) / 521] x 100
Subtract the new number by the original number
484 - 521 = -37
-37 ÷ 521 = -0.0710172744721689
-0.0710172744721689 x 100 = -7.1%