-27.36% is the change from 815 to 592
Calculation steps:
[( 592 - 815 ) ÷ 815] x 100 = -27.36%
Formula
Percentage change = [(592 - 815) / 815] x 100
Subtract the new number by the original number
592 - 815 = -223
-223 ÷ 815 = -0.27361963190184047
-0.27361963190184047 x 100 = -27.36%