-10.56% is the change from 521 to 466
Calculation steps:
[( 466 - 521 ) ÷ 521] x 100 = -10.56%
Formula
Percentage change = [(466 - 521) / 521] x 100
Subtract the new number by the original number
466 - 521 = -55
-55 ÷ 521 = -0.10556621880998081
-0.10556621880998081 x 100 = -10.56%