-64.58% is the change from 240 to 85
Calculation steps:
[( 85 - 240 ) ÷ 240] x 100 = -64.58%
Formula
Percentage change = [(85 - 240) / 240] x 100
Subtract the new number by the original number
85 - 240 = -155
-155 ÷ 240 = -0.6458333333333334
-0.6458333333333334 x 100 = -64.58%