78.55% is the change from 345 to 616
Calculation steps:
[( 616 - 345 ) ÷ 345] x 100 = 78.55%
Formula
Percentage change = [(616 - 345) / 345] x 100
Subtract the new number by the original number
616 - 345 = 271
271 ÷ 345 = 0.7855072463768116
0.7855072463768116 x 100 = 78.55%