-2.3% is the change from 653 to 638
Calculation steps:
[( 638 - 653 ) ÷ 653] x 100 = -2.3%
Formula
Percentage change = [(638 - 653) / 653] x 100
Subtract the new number by the original number
638 - 653 = -15
-15 ÷ 653 = -0.022970903522205207
-0.022970903522205207 x 100 = -2.3%