-26.63% is the change from 905 to 664
Calculation steps:
[( 664 - 905 ) ÷ 905] x 100 = -26.63%
Formula
Percentage change = [(664 - 905) / 905] x 100
Subtract the new number by the original number
664 - 905 = -241
-241 ÷ 905 = -0.2662983425414365
-0.2662983425414365 x 100 = -26.63%