31.21% is the change from 346 to 454
Calculation steps:
[( 454 - 346 ) ÷ 346] x 100 = 31.21%
Formula
Percentage change = [(454 - 346) / 346] x 100
Subtract the new number by the original number
454 - 346 = 108
108 ÷ 346 = 0.31213872832369943
0.31213872832369943 x 100 = 31.21%