-1.56% is the change from 642 to 632
Calculation steps:
[( 632 - 642 ) ÷ 642] x 100 = -1.56%
Formula
Percentage change = [(632 - 642) / 642] x 100
Subtract the new number by the original number
632 - 642 = -10
-10 ÷ 642 = -0.01557632398753894
-0.01557632398753894 x 100 = -1.56%