-53.49% is the change from 845 to 393
Calculation steps:
[( 393 - 845 ) ÷ 845] x 100 = -53.49%
Formula
Percentage change = [(393 - 845) / 845] x 100
Subtract the new number by the original number
393 - 845 = -452
-452 ÷ 845 = -0.5349112426035503
-0.5349112426035503 x 100 = -53.49%