-70.83% is the change from 240 to 70
Calculation steps:
[( 70 - 240 ) ÷ 240] x 100 = -70.83%
Formula
Percentage change = [(70 - 240) / 240] x 100
Subtract the new number by the original number
70 - 240 = -170
-170 ÷ 240 = -0.7083333333333334
-0.7083333333333334 x 100 = -70.83%