-68.75% is the change from 768 to 240
Calculation steps:
[( 240 - 768 ) ÷ 768] x 100 = -68.75%
Formula
Percentage change = [(240 - 768) / 768] x 100
Subtract the new number by the original number
240 - 768 = -528
-528 ÷ 768 = -0.6875
-0.6875 x 100 = -68.75%