-77.86% is the change from 831 to 184
Calculation steps:
[( 184 - 831 ) ÷ 831] x 100 = -77.86%
Formula
Percentage change = [(184 - 831) / 831] x 100
Subtract the new number by the original number
184 - 831 = -647
-647 ÷ 831 = -0.7785800240673887
-0.7785800240673887 x 100 = -77.86%