-20.83% is the change from 845 to 669
Calculation steps:
[( 669 - 845 ) ÷ 845] x 100 = -20.83%
Formula
Percentage change = [(669 - 845) / 845] x 100
Subtract the new number by the original number
669 - 845 = -176
-176 ÷ 845 = -0.20828402366863905
-0.20828402366863905 x 100 = -20.83%