78.2% is the change from 344 to 613
Calculation steps:
[( 613 - 344 ) ÷ 344] x 100 = 78.2%
Formula
Percentage change = [(613 - 344) / 344] x 100
Subtract the new number by the original number
613 - 344 = 269
269 ÷ 344 = 0.7819767441860465
0.7819767441860465 x 100 = 78.2%