-9.4% is the change from 521 to 472
Calculation steps:
[( 472 - 521 ) ÷ 521] x 100 = -9.4%
Formula
Percentage change = [(472 - 521) / 521] x 100
Subtract the new number by the original number
472 - 521 = -49
-49 ÷ 521 = -0.09404990403071017
-0.09404990403071017 x 100 = -9.4%