-32.33% is the change from 931 to 630
Calculation steps:
[( 630 - 931 ) ÷ 931] x 100 = -32.33%
Formula
Percentage change = [(630 - 931) / 931] x 100
Subtract the new number by the original number
630 - 931 = -301
-301 ÷ 931 = -0.3233082706766917
-0.3233082706766917 x 100 = -32.33%