-14.73% is the change from 638 to 544
Calculation steps:
[( 544 - 638 ) ÷ 638] x 100 = -14.73%
Formula
Percentage change = [(544 - 638) / 638] x 100
Subtract the new number by the original number
544 - 638 = -94
-94 ÷ 638 = -0.14733542319749215
-0.14733542319749215 x 100 = -14.73%