-1.71% is the change from 644 to 633
Calculation steps:
[( 633 - 644 ) ÷ 644] x 100 = -1.71%
Formula
Percentage change = [(633 - 644) / 644] x 100
Subtract the new number by the original number
633 - 644 = -11
-11 ÷ 644 = -0.017080745341614908
-0.017080745341614908 x 100 = -1.71%