45.93% is the change from 344 to 502
Calculation steps:
[( 502 - 344 ) ÷ 344] x 100 = 45.93%
Formula
Percentage change = [(502 - 344) / 344] x 100
Subtract the new number by the original number
502 - 344 = 158
158 ÷ 344 = 0.45930232558139533
0.45930232558139533 x 100 = 45.93%