-27.32% is the change from 831 to 604
Calculation steps:
[( 604 - 831 ) ÷ 831] x 100 = -27.32%
Formula
Percentage change = [(604 - 831) / 831] x 100
Subtract the new number by the original number
604 - 831 = -227
-227 ÷ 831 = -0.273164861612515
-0.273164861612515 x 100 = -27.32%