-21.21% is the change from 231 to 182
Calculation steps:
[( 182 - 231 ) ÷ 231] x 100 = -21.21%
Formula
Percentage change = [(182 - 231) / 231] x 100
Subtract the new number by the original number
182 - 231 = -49
-49 ÷ 231 = -0.21212121212121213
-0.21212121212121213 x 100 = -21.21%