61.47% is the change from 340 to 549
Calculation steps:
[( 549 - 340 ) ÷ 340] x 100 = 61.47%
Formula
Percentage change = [(549 - 340) / 340] x 100
Subtract the new number by the original number
549 - 340 = 209
209 ÷ 340 = 0.6147058823529412
0.6147058823529412 x 100 = 61.47%