-32.26% is the change from 930 to 630
Calculation steps:
[( 630 - 930 ) ÷ 930] x 100 = -32.26%
Formula
Percentage change = [(630 - 930) / 930] x 100
Subtract the new number by the original number
630 - 930 = -300
-300 ÷ 930 = -0.3225806451612903
-0.3225806451612903 x 100 = -32.26%