-21.76% is the change from 809 to 633
Calculation steps:
[( 633 - 809 ) ÷ 809] x 100 = -21.76%
Formula
Percentage change = [(633 - 809) / 809] x 100
Subtract the new number by the original number
633 - 809 = -176
-176 ÷ 809 = -0.21755253399258342
-0.21755253399258342 x 100 = -21.76%