-34.54% is the change from 831 to 544
Calculation steps:
[( 544 - 831 ) ÷ 831] x 100 = -34.54%
Formula
Percentage change = [(544 - 831) / 831] x 100
Subtract the new number by the original number
544 - 831 = -287
-287 ÷ 831 = -0.345367027677497
-0.345367027677497 x 100 = -34.54%