18.69% is the change from 337 to 400
Calculation steps:
[( 400 - 337 ) ÷ 337] x 100 = 18.69%
Formula
Percentage change = [(400 - 337) / 337] x 100
Subtract the new number by the original number
400 - 337 = 63
63 ÷ 337 = 0.18694362017804153
0.18694362017804153 x 100 = 18.69%