80.99% is the change from 342 to 619
Calculation steps:
[( 619 - 342 ) ÷ 342] x 100 = 80.99%
Formula
Percentage change = [(619 - 342) / 342] x 100
Subtract the new number by the original number
619 - 342 = 277
277 ÷ 342 = 0.8099415204678363
0.8099415204678363 x 100 = 80.99%