-28.53% is the change from 312 to 223
Calculation steps:
[( 223 - 312 ) ÷ 312] x 100 = -28.53%
Formula
Percentage change = [(223 - 312) / 312] x 100
Subtract the new number by the original number
223 - 312 = -89
-89 ÷ 312 = -0.28525641025641024
-0.28525641025641024 x 100 = -28.53%