-49.61% is the change from 768 to 387
Calculation steps:
[( 387 - 768 ) ÷ 768] x 100 = -49.61%
Formula
Percentage change = [(387 - 768) / 768] x 100
Subtract the new number by the original number
387 - 768 = -381
-381 ÷ 768 = -0.49609375
-0.49609375 x 100 = -49.61%