40.79% is the change from 277 to 390
Calculation steps:
[( 390 - 277 ) ÷ 277] x 100 = 40.79%
Formula
Percentage change = [(390 - 277) / 277] x 100
Subtract the new number by the original number
390 - 277 = 113
113 ÷ 277 = 0.40794223826714804
0.40794223826714804 x 100 = 40.79%