-10.93% is the change from 311 to 277
Calculation steps:
[( 277 - 311 ) ÷ 311] x 100 = -10.93%
Formula
Percentage change = [(277 - 311) / 311] x 100
Subtract the new number by the original number
277 - 311 = -34
-34 ÷ 311 = -0.10932475884244373
-0.10932475884244373 x 100 = -10.93%