-15.52% is the change from 831 to 702
Calculation steps:
[( 702 - 831 ) ÷ 831] x 100 = -15.52%
Formula
Percentage change = [(702 - 831) / 831] x 100
Subtract the new number by the original number
702 - 831 = -129
-129 ÷ 831 = -0.1552346570397112
-0.1552346570397112 x 100 = -15.52%