-23.31% is the change from 845 to 648
Calculation steps:
[( 648 - 845 ) ÷ 845] x 100 = -23.31%
Formula
Percentage change = [(648 - 845) / 845] x 100
Subtract the new number by the original number
648 - 845 = -197
-197 ÷ 845 = -0.2331360946745562
-0.2331360946745562 x 100 = -23.31%