9.72% is the change from 319 to 350
Calculation steps:
[( 350 - 319 ) ÷ 319] x 100 = 9.72%
Formula
Percentage change = [(350 - 319) / 319] x 100
Subtract the new number by the original number
350 - 319 = 31
31 ÷ 319 = 0.09717868338557993
0.09717868338557993 x 100 = 9.72%