-11.94% is the change from 310 to 273
Calculation steps:
[( 273 - 310 ) ÷ 310] x 100 = -11.94%
Formula
Percentage change = [(273 - 310) / 310] x 100
Subtract the new number by the original number
273 - 310 = -37
-37 ÷ 310 = -0.11935483870967742
-0.11935483870967742 x 100 = -11.94%