34.68% is the change from 297 to 400
Calculation steps:
[( 400 - 297 ) ÷ 297] x 100 = 34.68%
Formula
Percentage change = [(400 - 297) / 297] x 100
Subtract the new number by the original number
400 - 297 = 103
103 ÷ 297 = 0.3468013468013468
0.3468013468013468 x 100 = 34.68%