-33.01% is the change from 930 to 623
Calculation steps:
[( 623 - 930 ) ÷ 930] x 100 = -33.01%
Formula
Percentage change = [(623 - 930) / 930] x 100
Subtract the new number by the original number
623 - 930 = -307
-307 ÷ 930 = -0.3301075268817204
-0.3301075268817204 x 100 = -33.01%