-0.72% is the change from 277 to 275
Calculation steps:
[( 275 - 277 ) ÷ 277] x 100 = -0.72%
Formula
Percentage change = [(275 - 277) / 277] x 100
Subtract the new number by the original number
275 - 277 = -2
-2 ÷ 277 = -0.007220216606498195
-0.007220216606498195 x 100 = -0.72%