74.2% is the change from 345 to 601
Calculation steps:
[( 601 - 345 ) ÷ 345] x 100 = 74.2%
Formula
Percentage change = [(601 - 345) / 345] x 100
Subtract the new number by the original number
601 - 345 = 256
256 ÷ 345 = 0.7420289855072464
0.7420289855072464 x 100 = 74.2%