-50.39% is the change from 768 to 381
Calculation steps:
[( 381 - 768 ) ÷ 768] x 100 = -50.39%
Formula
Percentage change = [(381 - 768) / 768] x 100
Subtract the new number by the original number
381 - 768 = -387
-387 ÷ 768 = -0.50390625
-0.50390625 x 100 = -50.39%