20% is the change from 345 to 414
Calculation steps:
[( 414 - 345 ) ÷ 345] x 100 = 20%
Formula
Percentage change = [(414 - 345) / 345] x 100
Subtract the new number by the original number
414 - 345 = 69
69 ÷ 345 = 0.2
0.2 x 100 = 20%
Example