-30.02% is the change from 816 to 571
Calculation steps:
[( 571 - 816 ) ÷ 816] x 100 = -30.02%
Formula
Percentage change = [(571 - 816) / 816] x 100
Subtract the new number by the original number
571 - 816 = -245
-245 ÷ 816 = -0.3002450980392157
-0.3002450980392157 x 100 = -30.02%