-28.4% is the change from 331 to 237
Calculation steps:
[( 237 - 331 ) ÷ 331] x 100 = -28.4%
Formula
Percentage change = [(237 - 331) / 331] x 100
Subtract the new number by the original number
237 - 331 = -94
-94 ÷ 331 = -0.283987915407855
-0.283987915407855 x 100 = -28.4%