-5.19% is the change from 520 to 493
Calculation steps:
[( 493 - 520 ) ÷ 520] x 100 = -5.19%
Formula
Percentage change = [(493 - 520) / 520] x 100
Subtract the new number by the original number
493 - 520 = -27
-27 ÷ 520 = -0.051923076923076926
-0.051923076923076926 x 100 = -5.19%