-13.17% is the change from 638 to 554
Calculation steps:
[( 554 - 638 ) ÷ 638] x 100 = -13.17%
Formula
Percentage change = [(554 - 638) / 638] x 100
Subtract the new number by the original number
554 - 638 = -84
-84 ÷ 638 = -0.13166144200626959
-0.13166144200626959 x 100 = -13.17%