-49.35% is the change from 766 to 388
Calculation steps:
[( 388 - 766 ) ÷ 766] x 100 = -49.35%
Formula
Percentage change = [(388 - 766) / 766] x 100
Subtract the new number by the original number
388 - 766 = -378
-378 ÷ 766 = -0.4934725848563969
-0.4934725848563969 x 100 = -49.35%