-14.5% is the change from 331 to 283
Calculation steps:
[( 283 - 331 ) ÷ 331] x 100 = -14.5%
Formula
Percentage change = [(283 - 331) / 331] x 100
Subtract the new number by the original number
283 - 331 = -48
-48 ÷ 331 = -0.14501510574018128
-0.14501510574018128 x 100 = -14.5%