2.59% is the change from 270 to 277
Calculation steps:
[( 277 - 270 ) ÷ 270] x 100 = 2.59%
Formula
Percentage change = [(277 - 270) / 270] x 100
Subtract the new number by the original number
277 - 270 = 7
7 ÷ 270 = 0.025925925925925925
0.025925925925925925 x 100 = 2.59%