-51.92% is the change from 807 to 388
Calculation steps:
[( 388 - 807 ) ÷ 807] x 100 = -51.92%
Formula
Percentage change = [(388 - 807) / 807] x 100
Subtract the new number by the original number
388 - 807 = -419
-419 ÷ 807 = -0.5192069392812887
-0.5192069392812887 x 100 = -51.92%