-86.16% is the change from 224 to 31
Calculation steps:
[( 31 - 224 ) ÷ 224] x 100 = -86.16%
Formula
Percentage change = [(31 - 224) / 224] x 100
Subtract the new number by the original number
31 - 224 = -193
-193 ÷ 224 = -0.8616071428571429
-0.8616071428571429 x 100 = -86.16%