35.63% is the change from 320 to 434
Calculation steps:
[( 434 - 320 ) ÷ 320] x 100 = 35.63%
Formula
Percentage change = [(434 - 320) / 320] x 100
Subtract the new number by the original number
434 - 320 = 114
114 ÷ 320 = 0.35625
0.35625 x 100 = 35.63%