-57.76% is the change from 831 to 351
Calculation steps:
[( 351 - 831 ) ÷ 831] x 100 = -57.76%
Formula
Percentage change = [(351 - 831) / 831] x 100
Subtract the new number by the original number
351 - 831 = -480
-480 ÷ 831 = -0.5776173285198556
-0.5776173285198556 x 100 = -57.76%