-21.77% is the change from 519 to 406
Calculation steps:
[( 406 - 519 ) ÷ 519] x 100 = -21.77%
Formula
Percentage change = [(406 - 519) / 519] x 100
Subtract the new number by the original number
406 - 519 = -113
-113 ÷ 519 = -0.21772639691714837
-0.21772639691714837 x 100 = -21.77%