-24.14% is the change from 845 to 641
Calculation steps:
[( 641 - 845 ) ÷ 845] x 100 = -24.14%
Formula
Percentage change = [(641 - 845) / 845] x 100
Subtract the new number by the original number
641 - 845 = -204
-204 ÷ 845 = -0.24142011834319527
-0.24142011834319527 x 100 = -24.14%