-67.58% is the change from 768 to 249
Calculation steps:
[( 249 - 768 ) ÷ 768] x 100 = -67.58%
Formula
Percentage change = [(249 - 768) / 768] x 100
Subtract the new number by the original number
249 - 768 = -519
-519 ÷ 768 = -0.67578125
-0.67578125 x 100 = -67.58%