34.62% is the change from 338 to 455
Calculation steps:
[( 455 - 338 ) ÷ 338] x 100 = 34.62%
Formula
Percentage change = [(455 - 338) / 338] x 100
Subtract the new number by the original number
455 - 338 = 117
117 ÷ 338 = 0.34615384615384615
0.34615384615384615 x 100 = 34.62%