-24.64% is the change from 836 to 630
Calculation steps:
[( 630 - 836 ) ÷ 836] x 100 = -24.64%
Formula
Percentage change = [(630 - 836) / 836] x 100
Subtract the new number by the original number
630 - 836 = -206
-206 ÷ 836 = -0.24641148325358853
-0.24641148325358853 x 100 = -24.64%