-34.3% is the change from 831 to 546
Calculation steps:
[( 546 - 831 ) ÷ 831] x 100 = -34.3%
Formula
Percentage change = [(546 - 831) / 831] x 100
Subtract the new number by the original number
546 - 831 = -285
-285 ÷ 831 = -0.34296028880866425
-0.34296028880866425 x 100 = -34.3%