-31.31% is the change from 904 to 621
Calculation steps:
[( 621 - 904 ) ÷ 904] x 100 = -31.31%
Formula
Percentage change = [(621 - 904) / 904] x 100
Subtract the new number by the original number
621 - 904 = -283
-283 ÷ 904 = -0.31305309734513276
-0.31305309734513276 x 100 = -31.31%