-16.59% is the change from 639 to 533
Calculation steps:
[( 533 - 639 ) ÷ 639] x 100 = -16.59%
Formula
Percentage change = [(533 - 639) / 639] x 100
Subtract the new number by the original number
533 - 639 = -106
-106 ÷ 639 = -0.16588419405320814
-0.16588419405320814 x 100 = -16.59%