-5.54% is the change from 813 to 768
Calculation steps:
[( 768 - 813 ) ÷ 813] x 100 = -5.54%
Formula
Percentage change = [(768 - 813) / 813] x 100
Subtract the new number by the original number
768 - 813 = -45
-45 ÷ 813 = -0.055350553505535055
-0.055350553505535055 x 100 = -5.54%