20.77% is the change from 337 to 407
Calculation steps:
[( 407 - 337 ) ÷ 337] x 100 = 20.77%
Formula
Percentage change = [(407 - 337) / 337] x 100
Subtract the new number by the original number
407 - 337 = 70
70 ÷ 337 = 0.20771513353115728
0.20771513353115728 x 100 = 20.77%