74.49% is the change from 345 to 602
Calculation steps:
[( 602 - 345 ) ÷ 345] x 100 = 74.49%
Formula
Percentage change = [(602 - 345) / 345] x 100
Subtract the new number by the original number
602 - 345 = 257
257 ÷ 345 = 0.744927536231884
0.744927536231884 x 100 = 74.49%