-43.64% is the change from 770 to 434
Calculation steps:
[( 434 - 770 ) ÷ 770] x 100 = -43.64%
Formula
Percentage change = [(434 - 770) / 770] x 100
Subtract the new number by the original number
434 - 770 = -336
-336 ÷ 770 = -0.43636363636363634
-0.43636363636363634 x 100 = -43.64%