56.81% is the change from 345 to 541
Calculation steps:
[( 541 - 345 ) ÷ 345] x 100 = 56.81%
Formula
Percentage change = [(541 - 345) / 345] x 100
Subtract the new number by the original number
541 - 345 = 196
196 ÷ 345 = 0.5681159420289855
0.5681159420289855 x 100 = 56.81%