-17.53% is the change from 770 to 635
Calculation steps:
[( 635 - 770 ) ÷ 770] x 100 = -17.53%
Formula
Percentage change = [(635 - 770) / 770] x 100
Subtract the new number by the original number
635 - 770 = -135
-135 ÷ 770 = -0.17532467532467533
-0.17532467532467533 x 100 = -17.53%