-3.63% is the change from 688 to 663
Calculation steps:
[( 663 - 688 ) ÷ 688] x 100 = -3.63%
Formula
Percentage change = [(663 - 688) / 688] x 100
Subtract the new number by the original number
663 - 688 = -25
-25 ÷ 688 = -0.036337209302325583
-0.036337209302325583 x 100 = -3.63%