-53.28% is the change from 518 to 242
Calculation steps:
[( 242 - 518 ) ÷ 518] x 100 = -53.28%
Formula
Percentage change = [(242 - 518) / 518] x 100
Subtract the new number by the original number
242 - 518 = -276
-276 ÷ 518 = -0.5328185328185329
-0.5328185328185329 x 100 = -53.28%