-28.76% is the change from 904 to 644
Calculation steps:
[( 644 - 904 ) ÷ 904] x 100 = -28.76%
Formula
Percentage change = [(644 - 904) / 904] x 100
Subtract the new number by the original number
644 - 904 = -260
-260 ÷ 904 = -0.28761061946902655
-0.28761061946902655 x 100 = -28.76%