-40.78% is the change from 770 to 456
Calculation steps:
[( 456 - 770 ) ÷ 770] x 100 = -40.78%
Formula
Percentage change = [(456 - 770) / 770] x 100
Subtract the new number by the original number
456 - 770 = -314
-314 ÷ 770 = -0.4077922077922078
-0.4077922077922078 x 100 = -40.78%