3.63% is the change from 331 to 343
Calculation steps:
[( 343 - 331 ) ÷ 331] x 100 = 3.63%
Formula
Percentage change = [(343 - 331) / 331] x 100
Subtract the new number by the original number
343 - 331 = 12
12 ÷ 331 = 0.03625377643504532
0.03625377643504532 x 100 = 3.63%