-40.25% is the change from 405 to 242
Calculation steps:
[( 242 - 405 ) ÷ 405] x 100 = -40.25%
Formula
Percentage change = [(242 - 405) / 405] x 100
Subtract the new number by the original number
242 - 405 = -163
-163 ÷ 405 = -0.4024691358024691
-0.4024691358024691 x 100 = -40.25%