17.2% is the change from 343 to 402
Calculation steps:
[( 402 - 343 ) ÷ 343] x 100 = 17.2%
Formula
Percentage change = [(402 - 343) / 343] x 100
Subtract the new number by the original number
402 - 343 = 59
59 ÷ 343 = 0.17201166180758018
0.17201166180758018 x 100 = 17.2%