-75% is the change from 960 to 240
Calculation steps:
[( 240 - 960 ) ÷ 960] x 100 = -75%
Formula
Percentage change = [(240 - 960) / 960] x 100
Subtract the new number by the original number
240 - 960 = -720
-720 ÷ 960 = -0.75
-0.75 x 100 = -75%
Example