-40.65% is the change from 770 to 457
Calculation steps:
[( 457 - 770 ) ÷ 770] x 100 = -40.65%
Formula
Percentage change = [(457 - 770) / 770] x 100
Subtract the new number by the original number
457 - 770 = -313
-313 ÷ 770 = -0.4064935064935065
-0.4064935064935065 x 100 = -40.65%