-31.75% is the change from 337 to 230
Calculation steps:
[( 230 - 337 ) ÷ 337] x 100 = -31.75%
Formula
Percentage change = [(230 - 337) / 337] x 100
Subtract the new number by the original number
230 - 337 = -107
-107 ÷ 337 = -0.31750741839762614
-0.31750741839762614 x 100 = -31.75%