-73.16% is the change from 831 to 223
Calculation steps:
[( 223 - 831 ) ÷ 831] x 100 = -73.16%
Formula
Percentage change = [(223 - 831) / 831] x 100
Subtract the new number by the original number
223 - 831 = -608
-608 ÷ 831 = -0.7316486161251504
-0.7316486161251504 x 100 = -73.16%