18.41% is the change from 277 to 328
Calculation steps:
[( 328 - 277 ) ÷ 277] x 100 = 18.41%
Formula
Percentage change = [(328 - 277) / 277] x 100
Subtract the new number by the original number
328 - 277 = 51
51 ÷ 277 = 0.18411552346570398
0.18411552346570398 x 100 = 18.41%