-34.78% is the change from 966 to 630
Calculation steps:
[( 630 - 966 ) ÷ 966] x 100 = -34.78%
Formula
Percentage change = [(630 - 966) / 966] x 100
Subtract the new number by the original number
630 - 966 = -336
-336 ÷ 966 = -0.34782608695652173
-0.34782608695652173 x 100 = -34.78%