-30.98% is the change from 807 to 557
Calculation steps:
[( 557 - 807 ) ÷ 807] x 100 = -30.98%
Formula
Percentage change = [(557 - 807) / 807] x 100
Subtract the new number by the original number
557 - 807 = -250
-250 ÷ 807 = -0.3097893432465923
-0.3097893432465923 x 100 = -30.98%