-33.75% is the change from 240 to 159
Calculation steps:
[( 159 - 240 ) ÷ 240] x 100 = -33.75%
Formula
Percentage change = [(159 - 240) / 240] x 100
Subtract the new number by the original number
159 - 240 = -81
-81 ÷ 240 = -0.3375
-0.3375 x 100 = -33.75%