-30.18% is the change from 815 to 569
Calculation steps:
[( 569 - 815 ) ÷ 815] x 100 = -30.18%
Formula
Percentage change = [(569 - 815) / 815] x 100
Subtract the new number by the original number
569 - 815 = -246
-246 ÷ 815 = -0.301840490797546
-0.301840490797546 x 100 = -30.18%