42.61% is the change from 345 to 492
Calculation steps:
[( 492 - 345 ) ÷ 345] x 100 = 42.61%
Formula
Percentage change = [(492 - 345) / 345] x 100
Subtract the new number by the original number
492 - 345 = 147
147 ÷ 345 = 0.4260869565217391
0.4260869565217391 x 100 = 42.61%