27% is the change from 337 to 428
Calculation steps:
[( 428 - 337 ) ÷ 337] x 100 = 27%
Formula
Percentage change = [(428 - 337) / 337] x 100
Subtract the new number by the original number
428 - 337 = 91
91 ÷ 337 = 0.27002967359050445
0.27002967359050445 x 100 = 27%