-50.93% is the change from 807 to 396
Calculation steps:
[( 396 - 807 ) ÷ 807] x 100 = -50.93%
Formula
Percentage change = [(396 - 807) / 807] x 100
Subtract the new number by the original number
396 - 807 = -411
-411 ÷ 807 = -0.5092936802973977
-0.5092936802973977 x 100 = -50.93%