-2.93% is the change from 683 to 663
Calculation steps:
[( 663 - 683 ) ÷ 683] x 100 = -2.93%
Formula
Percentage change = [(663 - 683) / 683] x 100
Subtract the new number by the original number
663 - 683 = -20
-20 ÷ 683 = -0.029282576866764276
-0.029282576866764276 x 100 = -2.93%