-3.91% is the change from 768 to 738
Calculation steps:
[( 738 - 768 ) ÷ 768] x 100 = -3.91%
Formula
Percentage change = [(738 - 768) / 768] x 100
Subtract the new number by the original number
738 - 768 = -30
-30 ÷ 768 = -0.0390625
-0.0390625 x 100 = -3.91%