-83.24% is the change from 185 to 31
Calculation steps:
[( 31 - 185 ) ÷ 185] x 100 = -83.24%
Formula
Percentage change = [(31 - 185) / 185] x 100
Subtract the new number by the original number
31 - 185 = -154
-154 ÷ 185 = -0.8324324324324325
-0.8324324324324325 x 100 = -83.24%