-8.71% is the change from 310 to 283
Calculation steps:
[( 283 - 310 ) ÷ 310] x 100 = -8.71%
Formula
Percentage change = [(283 - 310) / 310] x 100
Subtract the new number by the original number
283 - 310 = -27
-27 ÷ 310 = -0.08709677419354839
-0.08709677419354839 x 100 = -8.71%