61.4% is the change from 342 to 552
Calculation steps:
[( 552 - 342 ) ÷ 342] x 100 = 61.4%
Formula
Percentage change = [(552 - 342) / 342] x 100
Subtract the new number by the original number
552 - 342 = 210
210 ÷ 342 = 0.6140350877192983
0.6140350877192983 x 100 = 61.4%