-4.37% is the change from 663 to 634
Calculation steps:
[( 634 - 663 ) ÷ 663] x 100 = -4.37%
Formula
Percentage change = [(634 - 663) / 663] x 100
Subtract the new number by the original number
634 - 663 = -29
-29 ÷ 663 = -0.043740573152337855
-0.043740573152337855 x 100 = -4.37%