6.34% is the change from 331 to 352
Calculation steps:
[( 352 - 331 ) ÷ 331] x 100 = 6.34%
Formula
Percentage change = [(352 - 331) / 331] x 100
Subtract the new number by the original number
352 - 331 = 21
21 ÷ 331 = 0.0634441087613293
0.0634441087613293 x 100 = 6.34%