-44.42% is the change from 770 to 428
Calculation steps:
[( 428 - 770 ) ÷ 770] x 100 = -44.42%
Formula
Percentage change = [(428 - 770) / 770] x 100
Subtract the new number by the original number
428 - 770 = -342
-342 ÷ 770 = -0.44415584415584414
-0.44415584415584414 x 100 = -44.42%