-10.97% is the change from 310 to 276
Calculation steps:
[( 276 - 310 ) ÷ 310] x 100 = -10.97%
Formula
Percentage change = [(276 - 310) / 310] x 100
Subtract the new number by the original number
276 - 310 = -34
-34 ÷ 310 = -0.10967741935483871
-0.10967741935483871 x 100 = -10.97%