-22.13% is the change from 809 to 630
Calculation steps:
[( 630 - 809 ) ÷ 809] x 100 = -22.13%
Formula
Percentage change = [(630 - 809) / 809] x 100
Subtract the new number by the original number
630 - 809 = -179
-179 ÷ 809 = -0.22126081582200247
-0.22126081582200247 x 100 = -22.13%