-8.57% is the change from 770 to 704
Calculation steps:
[( 704 - 770 ) ÷ 770] x 100 = -8.57%
Formula
Percentage change = [(704 - 770) / 770] x 100
Subtract the new number by the original number
704 - 770 = -66
-66 ÷ 770 = -0.08571428571428572
-0.08571428571428572 x 100 = -8.57%