-40.83% is the change from 409 to 242
Calculation steps:
[( 242 - 409 ) ÷ 409] x 100 = -40.83%
Formula
Percentage change = [(242 - 409) / 409] x 100
Subtract the new number by the original number
242 - 409 = -167
-167 ÷ 409 = -0.4083129584352078
-0.4083129584352078 x 100 = -40.83%