-4.65% is the change from 666 to 635
Calculation steps:
[( 635 - 666 ) ÷ 666] x 100 = -4.65%
Formula
Percentage change = [(635 - 666) / 666] x 100
Subtract the new number by the original number
635 - 666 = -31
-31 ÷ 666 = -0.046546546546546545
-0.046546546546546545 x 100 = -4.65%