-16.36% is the change from 642 to 537
Calculation steps:
[( 537 - 642 ) ÷ 642] x 100 = -16.36%
Formula
Percentage change = [(537 - 642) / 642] x 100
Subtract the new number by the original number
537 - 642 = -105
-105 ÷ 642 = -0.16355140186915887
-0.16355140186915887 x 100 = -16.36%