-39.58% is the change from 240 to 145
Calculation steps:
[( 145 - 240 ) ÷ 240] x 100 = -39.58%
Formula
Percentage change = [(145 - 240) / 240] x 100
Subtract the new number by the original number
145 - 240 = -95
-95 ÷ 240 = -0.3958333333333333
-0.3958333333333333 x 100 = -39.58%