-40.76% is the change from 768 to 455
Calculation steps:
[( 455 - 768 ) ÷ 768] x 100 = -40.76%
Formula
Percentage change = [(455 - 768) / 768] x 100
Subtract the new number by the original number
455 - 768 = -313
-313 ÷ 768 = -0.4075520833333333
-0.4075520833333333 x 100 = -40.76%