-11.61% is the change from 310 to 274
Calculation steps:
[( 274 - 310 ) ÷ 310] x 100 = -11.61%
Formula
Percentage change = [(274 - 310) / 310] x 100
Subtract the new number by the original number
274 - 310 = -36
-36 ÷ 310 = -0.11612903225806452
-0.11612903225806452 x 100 = -11.61%