-29.91% is the change from 331 to 232
Calculation steps:
[( 232 - 331 ) ÷ 331] x 100 = -29.91%
Formula
Percentage change = [(232 - 331) / 331] x 100
Subtract the new number by the original number
232 - 331 = -99
-99 ÷ 331 = -0.2990936555891239
-0.2990936555891239 x 100 = -29.91%