34.01% is the change from 247 to 331
Calculation steps:
[( 331 - 247 ) ÷ 247] x 100 = 34.01%
Formula
Percentage change = [(331 - 247) / 247] x 100
Subtract the new number by the original number
331 - 247 = 84
84 ÷ 247 = 0.340080971659919
0.340080971659919 x 100 = 34.01%