-16.38% is the change from 635 to 531
Calculation steps:
[( 531 - 635 ) ÷ 635] x 100 = -16.38%
Formula
Percentage change = [(531 - 635) / 635] x 100
Subtract the new number by the original number
531 - 635 = -104
-104 ÷ 635 = -0.16377952755905512
-0.16377952755905512 x 100 = -16.38%