61.7% is the change from 342 to 553
Calculation steps:
[( 553 - 342 ) ÷ 342] x 100 = 61.7%
Formula
Percentage change = [(553 - 342) / 342] x 100
Subtract the new number by the original number
553 - 342 = 211
211 ÷ 342 = 0.6169590643274854
0.6169590643274854 x 100 = 61.7%