-12.12% is the change from 520 to 457
Calculation steps:
[( 457 - 520 ) ÷ 520] x 100 = -12.12%
Formula
Percentage change = [(457 - 520) / 520] x 100
Subtract the new number by the original number
457 - 520 = -63
-63 ÷ 520 = -0.12115384615384615
-0.12115384615384615 x 100 = -12.12%