-24.55% is the change from 835 to 630
Calculation steps:
[( 630 - 835 ) ÷ 835] x 100 = -24.55%
Formula
Percentage change = [(630 - 835) / 835] x 100
Subtract the new number by the original number
630 - 835 = -205
-205 ÷ 835 = -0.24550898203592814
-0.24550898203592814 x 100 = -24.55%