-85.83% is the change from 240 to 34
Calculation steps:
[( 34 - 240 ) ÷ 240] x 100 = -85.83%
Formula
Percentage change = [(34 - 240) / 240] x 100
Subtract the new number by the original number
34 - 240 = -206
-206 ÷ 240 = -0.8583333333333333
-0.8583333333333333 x 100 = -85.83%