-49.81% is the change from 518 to 260
Calculation steps:
[( 260 - 518 ) ÷ 518] x 100 = -49.81%
Formula
Percentage change = [(260 - 518) / 518] x 100
Subtract the new number by the original number
260 - 518 = -258
-258 ÷ 518 = -0.4980694980694981
-0.4980694980694981 x 100 = -49.81%