-40.54% is the change from 407 to 242
Calculation steps:
[( 242 - 407 ) ÷ 407] x 100 = -40.54%
Formula
Percentage change = [(242 - 407) / 407] x 100
Subtract the new number by the original number
242 - 407 = -165
-165 ÷ 407 = -0.40540540540540543
-0.40540540540540543 x 100 = -40.54%