38.78% is the change from 343 to 476
Calculation steps:
[( 476 - 343 ) ÷ 343] x 100 = 38.78%
Formula
Percentage change = [(476 - 343) / 343] x 100
Subtract the new number by the original number
476 - 343 = 133
133 ÷ 343 = 0.3877551020408163
0.3877551020408163 x 100 = 38.78%