-16.14% is the change from 638 to 535
Calculation steps:
[( 535 - 638 ) ÷ 638] x 100 = -16.14%
Formula
Percentage change = [(535 - 638) / 638] x 100
Subtract the new number by the original number
535 - 638 = -103
-103 ÷ 638 = -0.1614420062695925
-0.1614420062695925 x 100 = -16.14%