6.51% is the change from 261 to 278
Calculation steps:
[( 278 - 261 ) ÷ 261] x 100 = 6.51%
Formula
Percentage change = [(278 - 261) / 261] x 100
Subtract the new number by the original number
278 - 261 = 17
17 ÷ 261 = 0.06513409961685823
0.06513409961685823 x 100 = 6.51%