-16.61% is the change from 638 to 532
Calculation steps:
[( 532 - 638 ) ÷ 638] x 100 = -16.61%
Formula
Percentage change = [(532 - 638) / 638] x 100
Subtract the new number by the original number
532 - 638 = -106
-106 ÷ 638 = -0.16614420062695925
-0.16614420062695925 x 100 = -16.61%