-46.25% is the change from 240 to 129
Calculation steps:
[( 129 - 240 ) ÷ 240] x 100 = -46.25%
Formula
Percentage change = [(129 - 240) / 240] x 100
Subtract the new number by the original number
129 - 240 = -111
-111 ÷ 240 = -0.4625
-0.4625 x 100 = -46.25%