-65.46% is the change from 831 to 287
Calculation steps:
[( 287 - 831 ) ÷ 831] x 100 = -65.46%
Formula
Percentage change = [(287 - 831) / 831] x 100
Subtract the new number by the original number
287 - 831 = -544
-544 ÷ 831 = -0.6546329723225031
-0.6546329723225031 x 100 = -65.46%