49.24% is the change from 331 to 494
Calculation steps:
[( 494 - 331 ) ÷ 331] x 100 = 49.24%
Formula
Percentage change = [(494 - 331) / 331] x 100
Subtract the new number by the original number
494 - 331 = 163
163 ÷ 331 = 0.49244712990936557
0.49244712990936557 x 100 = 49.24%