49.13% is the change from 344 to 513
Calculation steps:
[( 513 - 344 ) ÷ 344] x 100 = 49.13%
Formula
Percentage change = [(513 - 344) / 344] x 100
Subtract the new number by the original number
513 - 344 = 169
169 ÷ 344 = 0.49127906976744184
0.49127906976744184 x 100 = 49.13%