-49.22% is the change from 768 to 390
Calculation steps:
[( 390 - 768 ) ÷ 768] x 100 = -49.22%
Formula
Percentage change = [(390 - 768) / 768] x 100
Subtract the new number by the original number
390 - 768 = -378
-378 ÷ 768 = -0.4921875
-0.4921875 x 100 = -49.22%