61.29% is the change from 341 to 550
Calculation steps:
[( 550 - 341 ) ÷ 341] x 100 = 61.29%
Formula
Percentage change = [(550 - 341) / 341] x 100
Subtract the new number by the original number
550 - 341 = 209
209 ÷ 341 = 0.6129032258064516
0.6129032258064516 x 100 = 61.29%