-34.91% is the change from 845 to 550
Calculation steps:
[( 550 - 845 ) ÷ 845] x 100 = -34.91%
Formula
Percentage change = [(550 - 845) / 845] x 100
Subtract the new number by the original number
550 - 845 = -295
-295 ÷ 845 = -0.34911242603550297
-0.34911242603550297 x 100 = -34.91%