54.51% is the change from 277 to 428
Calculation steps:
[( 428 - 277 ) ÷ 277] x 100 = 54.51%
Formula
Percentage change = [(428 - 277) / 277] x 100
Subtract the new number by the original number
428 - 277 = 151
151 ÷ 277 = 0.5451263537906137
0.5451263537906137 x 100 = 54.51%