-65.58% is the change from 831 to 286
Calculation steps:
[( 286 - 831 ) ÷ 831] x 100 = -65.58%
Formula
Percentage change = [(286 - 831) / 831] x 100
Subtract the new number by the original number
286 - 831 = -545
-545 ÷ 831 = -0.6558363417569194
-0.6558363417569194 x 100 = -65.58%