-26.23% is the change from 831 to 613
Calculation steps:
[( 613 - 831 ) ÷ 831] x 100 = -26.23%
Formula
Percentage change = [(613 - 831) / 831] x 100
Subtract the new number by the original number
613 - 831 = -218
-218 ÷ 831 = -0.26233453670276774
-0.26233453670276774 x 100 = -26.23%