-37.06% is the change from 831 to 523
Calculation steps:
[( 523 - 831 ) ÷ 831] x 100 = -37.06%
Formula
Percentage change = [(523 - 831) / 831] x 100
Subtract the new number by the original number
523 - 831 = -308
-308 ÷ 831 = -0.37063778580024065
-0.37063778580024065 x 100 = -37.06%