-31.91% is the change from 818 to 557
Calculation steps:
[( 557 - 818 ) ÷ 818] x 100 = -31.91%
Formula
Percentage change = [(557 - 818) / 818] x 100
Subtract the new number by the original number
557 - 818 = -261
-261 ÷ 818 = -0.31907090464547677
-0.31907090464547677 x 100 = -31.91%