-3.97% is the change from 277 to 266
Calculation steps:
[( 266 - 277 ) ÷ 277] x 100 = -3.97%
Formula
Percentage change = [(266 - 277) / 277] x 100
Subtract the new number by the original number
266 - 277 = -11
-11 ÷ 277 = -0.039711191335740074
-0.039711191335740074 x 100 = -3.97%